What value divided by 21 equals 40?

In other words, what would the dividend be if the divisor were 21 and the quotient 40?

To find the answer, just multiply the divisor with the quotient: 21 × 40 = 840

To prove this, let's compute 840 divided by 21: 840 21 = 40

How does it work?

Asking which value divided by 21 gives a result of 40 is equivalent to solving the following equation:

x 21 = 40

  1. We need to isolate x, so multiply both sides by 21: 21 x 21 = 21 × 40
  2. 21 x 21 is equivalent to 21 21 x , which simplifies to 1 x (or just x ).
  3. Thus: x = 21 × 40 = 840

So, if the divisor is 21 and the quotient is 40, the dividend is 840.