3 times X plus the product of 16 and 5, the sum is 113, find X.
X的3倍加上16与5的积，和是113，求X．
<gadget id="calculator">16 * 5</gadget>
<output>80</output>

<gadget id="calculator">113 - 80</gadget>
<output>33</output>

<gadget id="calculator">33 / 3</gadget>
<output>11</output>

<result>11</result>