How much is it to combine 80/5=16, 640-16=624 into one comprehensive formula.
把80/5=16，640-16=624，合并成一道综合算式是多少．
<gadget id="calculator">80 / 5</gadget>
<output>16</output>

<gadget id="calculator">640 - 16</gadget>
<output>624</output>

<result>624</result>