Mom bought 15 peaches and ate 3. What fraction of the total number of peaches are left?
妈妈买来15个桃子，吃掉了3个，剩下的桃子是总数的几分之几？
<gadget id="calculator">15 - 3</gadget>
<output>12</output>

<gadget id="calculator">12 / 15</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>