There is a pile of peaches, the first monkey took 10, and the second monkey took the rest (1/4). At this time, the remaining peaches belonged to the original pile (4/7). How many peaches were there?
有一堆桃子，第一只猴子拿走了10个，第二个猴子拿走剩下的(1/4)，这时剩下的桃子是原来那堆桃子的(4/7)．原来有多少个桃子？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/4) * 10</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">10 - (5/2)</gadget>
<output>15/2 = around 7.5</output>

<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">1 - (1/4) - (4/7)</gadget>
<output>5/28 = around 0.178571</output>

<gadget id="calculator">(15/2) / (5/28)</gadget>
<output>42</output>

<result>42</result>