37 students want to cross the river by boat, and there is only one boat at the ferry that can carry 5 people (no boatman). They will all cross the river, at least how many times they will use this boat to cross the river.
37个同学要坐船过河，渡口处只有一只能载5人的小船(无船工)．他们要全部渡过河去，至少要使用这只小船渡河多少次．
<gadget id="calculator">37 - 5</gadget>
<output>32</output>

<gadget id="calculator">32 / 4</gadget>
<output>8</output>

<gadget id="calculator">8 + 1</gadget>
<output>9</output>

<result>9</result>