$$We want to solve for p here. This means we want to get p alone on one side.\\
$8.5 = 5p$\qquad\qquad\mbox{Divide both sides by 5 to "clear" the 5 from the right side}\\
$8.5\div 5 = p$\\
Now we found p, but we have to simplify the left side. 8.5 is the same thing as $8\frac{5}{10}$, which is the same thing as $8 \frac{1}{2}$, which is the same thing as $\frac{17}{2}$. So, now we have:\\
$\frac{17}{2}\div 5 = p$\\
Remember, when we divide a number, it is the same thing as multiplying by that numbers reciprocal, this means we now get:\\
$\frac{17}{2}\times\frac{1}{5} = p$\qquad\qquad\mbox{Multiply these fractins together}\\\\
$\frac{17}{10} = p$\\
This means $p =\frac{17}{10}$, or $p=1\frac{7}{10}$, or $p = 1.7$$$
$$We want to solve for p here. This means we want to get p alone on one side.\\
$8.5 = 5p$\qquad\qquad\mbox{Divide both sides by 5 to "clear" the 5 from the right side}\\
$8.5\div 5 = p$\\
Now we found p, but we have to simplify the left side. 8.5 is the same thing as $8\frac{5}{10}$, which is the same thing as $8 \frac{1}{2}$, which is the same thing as $\frac{17}{2}$. So, now we have:\\
$\frac{17}{2}\div 5 = p$\\
Remember, when we divide a number, it is the same thing as multiplying by that numbers reciprocal, this means we now get:\\
$\frac{17}{2}\times\frac{1}{5} = p$\qquad\qquad\mbox{Multiply these fractins together}\\\\
$\frac{17}{10} = p$\\
This means $p =\frac{17}{10}$, or $p=1\frac{7}{10}$, or $p = 1.7$$$