There are 186 skipping ropes in the school sports room. There are 5 classes in the fourth grade, and each class borrowed 18. The rest are lent to the four classes of the fifth grade, how many are borrowed by each class on average?
学校体育室一共有186根跳绳．四年级5个班，每班借了18根．剩下的借给五年级的四个班，平均每班借多少根？
<gadget id="calculator">18 * 5</gadget>
<output>90</output>

<gadget id="calculator">186 - 90</gadget>
<output>96</output>

<gadget id="calculator">96 / 4</gadget>
<output>24</output>

<result>24</result>