Xiaoting used to jump rope 75 times per minute, but now she can jump 100 times per minute. It used to be 4 minutes to jump, but now it only needs to jump for a few minutes?
小婷跳绳原来每分钟跳75下，现在每分钟可以跳100下．原来4分钟跳的下数，现在只要跳几分钟？
<gadget id="calculator">4 / 100</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">75 * (1/25)</gadget>
<output>3</output>

<result>3</result>