What value divided by 81 equals 25?

How does it work?

Asking which value divided by 81 gives a result of 25 is equivalent to solving the following equation:

$\frac{x}{81}=25$

1. We need to isolate x, so multiply both sides by 81: $\frac{81x}{\mathrm{81}}=81\times 25$
2. $\frac{81x}{\mathrm{81}}$ is equivalent to $\frac{81}{\mathrm{81}}x$, which simplifies to $1x$ (or just $x$).
3. Thus: $x=81\times 25=2025$

So, if the divisor is 81 and the quotient is 25, the dividend is 2025.