Multiplying by 2 is the same as adding a number twice. I.e. 1 * 2 = 1 + 1 = 2
Multiplying by 3 is the same as adding a number three times. 2 * 3 equals 2 + 2 + 2, which
equals 6. This saves a lot of time in writing out the same number multiple times, and is a very
useful operation in mathematics.
Division works a similar way, where it’s like subtracting a number multiple time and determining
how many times you’d have to subtract the denominator from the numerator. i.e. 6 / 2 = 3.
You’d have to subtract 2 three times from 6 to get 0. 6 – 2 – 2 – 2 = 0. It also goes the opposite
way, as adding 2 three times equals 6: 2 + 2 + 2 = 6.