35 tons will be shipped today. 5 tons each time. It was transported 3 times in the morning, how many times will it take to finish it in the afternoon?
今天要运35吨．每次运5吨．上午运了3次，下午要运多少次才能运完？
<gadget id="calculator">5 * 3</gadget>
<output>15</output>

<gadget id="calculator">35 - 15</gadget>
<output>20</output>

<gadget id="calculator">20 / 5</gadget>
<output>4</output>

<result>4</result>