Subtract 16 from a number, add 240, and divide by 7 to get 40. What is the number?
一个数减16加上240，再除以7得40，求这个数是多少？
<gadget id="calculator">7 * 40</gadget>
<output>280</output>

<gadget id="calculator">280 - 240</gadget>
<output>40</output>

<gadget id="calculator">40 + 16</gadget>
<output>56</output>

<result>56</result>