There are 20 coins of 2 cents and 5 cents in the savings box of the classmate, totaling RMB 70.6 cents. How many 2 cents coins are there?
同学的储蓄箱内有2分和5分的硬币20个，总计人民币7角6分，其中2分硬币有多少个．
<gadget id="calculator">100 - 76</gadget>
<output>24</output>

<gadget id="calculator">5 - 2</gadget>
<output>3</output>

<gadget id="calculator">24 / 3</gadget>
<output>8</output>

<result>8</result>