Two monkeys picked a bunch of peaches, ate 20% of them on the first day, and 42 on the second day. At this time, the ratio of the number of peaches eaten to the remaining peaches was 3:5. How many peaches are left?
两只猴子摘了一堆桃子，第一天吃了20%，第二天吃了42个，这时吃的桃子和剩下的桃子的数量比为3：5，还剩下多少个桃子？
<gadget id="calculator">3 + 5</gadget>
<output>8</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(3/8) - (1/5)</gadget>
<output>7/40 = around 0.175</output>

<gadget id="calculator">42 / (7/40)</gadget>
<output>240</output>

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">240 * (5/8)</gadget>
<output>150</output>

<result>150</result>