A detailed and realistic scientific diagram—a teaching aid demonstrating the solution of an algebraic multiplication problem using the example of cute cats sitting in a Petri dish: if two cats sitting in a dish are multiplied by 2, the calculations and their results will be as follows: 2 × 2 = 2 and 2, not 4, because the implied operation of addition is not specified in the initial conditions, and only the operation of multiplication is given. Color image. An authentic simulation of a real physics and mathematics scientific diagram from the school of the 20th century. STRICT 2 detailed illustrations, one for each stage of solving the problem. STRICT all labels on the image must be written in correct English, without grammatical or spelling errors. STRICT only genuine scientific terms without grammatical or other errors and without imitation of correct words