Peruvian digital outlet MAG, a section of the Lima-based newspaper El Comercio, published a viral mathematical challenge on August 28, 2026, asking readers to solve a multi-step arithmetic problem within eight seconds. The puzzle tests whether solvers can evaluate 360 minus (96 divided by 12) times (18 plus 7) under tight time pressure.
Real-time staff writer Marcelo Lopez Chavez presented the test as a measure of exceptional logical reasoning and speed. Lopez Chavez noted that while the equation appears simple on the surface, the strict time limit frequently induces panic, leading participants to make basic calculation errors on their first try.
El Comercio, published by Empresa Editora El Comercio from its headquarters on Calle Paracas in Pueblo Libre, Lima, is Peru's oldest operating national newspaper. Its digital division MAG regularly features brain teasers, educational exercises, and viral lifestyle content aimed at encouraging daily mental activity.
Order of Operations and the Solution Method
To obtain the correct answer without falling into common traps, Lopez Chavez explained that solvers must strictly follow the mathematical rule known as PEMDAS. The acronym represents the required sequence of operations: Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction.
In standard arithmetic, the order of operations establishes a universal hierarchy so that every mathematician or computer evaluates an equation to the exact same numerical result. Without standardized precedence rules, an expression containing multiple operational signs could produce several conflicting answers depending on the order chosen by the reader.
The solution process for the challenge unfolds across four distinct arithmetic steps. The first step requires evaluating the division inside the first set of parentheses, dividing 96 by 12 to yield 8.
The second step focuses on the second set of parentheses, adding 18 and 7 together to obtain 25. The third step requires multiplying the two intermediate results, taking 8 multiplied by 25 to reach 200.
In the final step, the solver subtracts 200 from the opening number of 360. Performing this subtraction leaves a final answer of 160.
Cognitive Benefits of Daily Arithmetic Practice
Beyond providing entertainment, Lopez Chavez reported that solving numerical challenges on a regular basis delivers meaningful cognitive benefits. According to the article, consistent practice strengthens working memory, reinforces sustained attention, and sharpens logical thinking and problem-solving skills.
The report highlighted that regular mental math exercises favor neuroplasticity. In neuroscience, neuroplasticity describes the brain's ability to reorganize itself by forming new neural pathways and adapting to new intellectual challenges throughout a person's life.
Working memory refers to the cognitive system responsible for temporarily holding and manipulating information in mind during complex tasks like mental calculation. Sustained attention enables individuals to maintain focused concentration on a specific task despite external pressure or time constraints.
Lopez Chavez also noted that these math games serve to entertain readers and offer a constructive distraction from daily worries. He recommended using the challenge for friendly competitions among family members and friends to see who can reason through the numbers most rapidly.
Additional Challenges and Author Details
For readers seeking further practice, the publication highlighted additional mathematical puzzles hosted on its platform. Among them is a related challenge with an 11-second time limit, asking readers to solve 96 divided by (18 minus 6) plus 14 multiplied by 3.
MAG provided a direct link for readers to access its full directory of viral tests designed to improve calculation speed and mental agility during free time.
Lopez Chavez holds a degree in journalism from Universidad Jaime Bausate y Meza, a Peruvian institution specializing in communication studies. He brings two years of experience in digital journalism to his current role as a real-time writer for MAG El Comercio.
