In 840/20=42 what is the quotient if the divisor is divided by 2
在840/20=42中，如果除数除以2，那么商是多少
<gadget id="calculator">840 / 20</gadget>
<output>42</output>

<gadget id="calculator">42 * 2</gadget>
<output>84</output>

<result>84</result>