There is a batch of chemical fertilizers on the pier. It needs to be transported 10 times by a truck, and 25 times by a tractor. After 8 times by a truck, there are other tasks, and the rest should be transported by a tractor. How many more times do you need to transport?
码头上有一批化肥，用一辆货车运送需要10次，用一辆拖拉机运送需要25次，一辆货车运了8次后另有任务，剩下的改用拖拉机运，还要运多少次？
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(1/10) * 8</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 / 25</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">(1/5) / (1/25)</gadget>
<output>5</output>

<result>5</result>