###Human: Hana sold 4/7 of her stamp collection for $28. How much would she have earned from selling the entire collection?, ### Assistant: Hana sold 4/7 of her collection for $28, so 1/7 of her collection represents: 28/4 = $7.
And as a result, the entire collection represents: 7 * 7 = $49. 
 So the answer is :  49