Adding 15 to a number, Xiaojun mistook the plus sign for the multiplication sign when calculating, and the result is 240, what should be the correct result?
一个数加上15，小军在计算时把加号误作为乘号，得到的结果是240，正确的结果应该是多少？
<gadget id="calculator">240 / 15</gadget>
<output>16</output>

<gadget id="calculator">16 + 15</gadget>
<output>31</output>

<result>31</result>