I do 20 oral arithmetic problems every day, how many times do I do oral arithmetic problems for 5 days.
我每天做20道口算题，做5天的口算题是一天的多少倍．
<gadget id="calculator">5 / 20</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">20 * (1/4)</gadget>
<output>5</output>

<result>5</result>