Three monkeys are given a basket of peaches, and the first monkey gets 2 more (2/7) of all the peaches. The second one gets 4 less of the remaining (2/3), and the third one gets 20. Ask: How many peaches are there in this basket?
三只猴子分一筐桃，第一只猴子分得全部桃子的(2/7)多2个．第二只分到余下的(2/3)少4个，第三只分到20个，问：这筐桃子共有多少个？
<gadget id="calculator">20 - 4</gadget>
<output>16</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">16 / (1/3)</gadget>
<output>48</output>

<gadget id="calculator">48 + 2</gadget>
<output>50</output>

<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">1 - (2/7)</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">50 / (5/7)</gadget>
<output>70</output>

<result>70</result>