What is the number that is 10.5 more than three times 10.5?
比10.5的3倍多10.5的数是多少．
<gadget id="calculator">10.5 * 3</gadget>
<output>31.5</output>

<gadget id="calculator">31.5 + 10.5</gadget>
<output>42</output>

<result>42</result>