What is x when 57 divided by x equals 31?

To find the answer, just divide the dividend by the quotient: 57 ÷ 31 = 1.8387096774194

To prove this, let's compute 57 divided by 1.8387096774194: $\frac{57}{1.8387096774194} = 31$

How does it work?

Asking what the value of x could be when 57 divided by x gives a result of 31, is equivalent to solving the following equation:

$\frac{57}{x} = 31$

Multiply both sides by x: $\frac{57 x}{x} = 31 x$
$\frac{57 x}{x}$ is equivalent to $\frac{x}{x} \times 57$ , which simplifies to $1 \times 57$ (or just $57$ ).
Thus, the equation becomes: $57 = 31 x$
To find x, divide both sides by 31: $\frac{57}{31} = \frac{31 x}{31}$
Which gives, after simplification: $1.8387096774194 = x$ (or $x = 1.8387096774194$ )

So, if the dividend is 57 and the quotient is 31, the divisor is 1.8387096774194.