Answer
105 dividers
Work Step by Step
$\ \ \ \ \ \ \ \ 105$
$50\bigr)\overline{5280}$
$\ \ \ \ \ \ \underline{50}$
$\ \ \ \ \ \ \ \ \,28$
$\ \ \,\ \ \ \ \ \ \underline{00}$
$\ \ \ \ \ \ \,\ \ \,280$
$\ \ \ \ \ \ \ \ \ \,\underline{250}$
$\ \ \ \ \ \ \ \ \ \ \ \ 30$