How many elementary school students holding hands can circle the earth's equator three and a half times.
多少个小学生手拉手可以绕地球赤道3圈半．
<gadget id="calculator">3.5 / 1.6 / 10</gadget>
<output>0.21875</output>

<gadget id="calculator">40_000 * 1_000 * 0.21875</gadget>
<output>8_750_000</output>

<result>8_750_000</result>