What is x when 18 divided by x equals 91?

To find the answer, just divide the dividend by the quotient: 18 ÷ 91 = 0.1978021978022

To prove this, let's compute 18 divided by 0.1978021978022: $\frac{18}{0.1978021978022} = 91$

How does it work?

Asking what the value of x could be when 18 divided by x gives a result of 91, is equivalent to solving the following equation:

$\frac{18}{x} = 91$

Multiply both sides by x: $\frac{18 x}{x} = 91 x$
$\frac{18 x}{x}$ is equivalent to $\frac{x}{x} \times 18$ , which simplifies to $1 \times 18$ (or just $18$ ).
Thus, the equation becomes: $18 = 91 x$
To find x, divide both sides by 91: $\frac{18}{91} = \frac{91 x}{91}$
Which gives, after simplification: $0.1978021978022 = x$ (or $x = 0.1978021978022$ )

So, if the dividend is 18 and the quotient is 91, the divisor is 0.1978021978022.