There are more than 70 skipping ropes. If they are distributed equally to a group of students, each person can get 12 ropes; if they are only distributed equally to girls, each person can get 18 ropes; How many?
有70多根跳绳，若平均分给一组同学，每人可以分得12根；若只平均分给女生，每人可以得18根；若只平均分给男生，则平均每人可以分得多少根？
<gadget id="calculator">72 / 12</gadget>
<output>6</output>

<gadget id="calculator">72 / 18</gadget>
<output>4</output>

<gadget id="calculator">6 - 4</gadget>
<output>2</output>

<gadget id="calculator">72 / 2</gadget>
<output>36</output>

<result>36</result>