Lingling skipped 300 times on the first day and 400 times on the second day, how much less skipped on the first day than on the second day
玲玲第一天跳绳300下，第二天跳绳400下，第一天比第二天少跳多少
<gadget id="calculator">400 - 300</gadget>
<output>100</output>

<gadget id="calculator">100 / 400</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>