What is the difference between the product of 20 and 5 minus the quotient of 240 divided by 8?
20与5的积减去240除以8的商，差是多少．
<gadget id="calculator">20 * 5</gadget>
<output>100</output>

<gadget id="calculator">240 / 8</gadget>
<output>30</output>

<gadget id="calculator">100 - 30</gadget>
<output>70</output>

<result>70</result>