There are 50 coins of 1 yuan and 5 cents in Wenwen's piggy bank, totaling 38 yuan. How many 1 yuan coins are there?
文文的储蓄罐里有1元和5角的硬币一共50枚，合计38元．其中1元的硬币有多少枚．
<gadget id="calculator">5 / 10</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) * 50</gadget>
<output>25</output>

<gadget id="calculator">38 - 25</gadget>
<output>13</output>

<gadget id="calculator">1 - (1/2)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">13 / (1/2)</gadget>
<output>26</output>

<result>26</result>