Hana sold 4/7 of her stamp collection for $28. How much would she have earned from selling the entire collection?
Hana sold 4/7 of her collection for $28, so 1/7 of her collection represents: 28/4 = $
<gadget id="calculator">28/4</gadget>
<output>7</output>
7.
And as a result, the entire collection represents: 7 * 7 = $
<gadget id="calculator">7*7</gadget>
<output>49</output>
49.

<result>49</result>