The granary workers have to deliver 45 tons of grain today, 5 tons at a time, 4 times in the morning, how many times will it take to deliver in the afternoon?
粮仓工人今天要送出45吨粮食，每次能送5吨，上午送了4次，下午要送多少次才能送完？
<gadget id="calculator">45 / 5</gadget>
<output>9</output>

<gadget id="calculator">9 - 4</gadget>
<output>5</output>

<result>5</result>