There is a batch of chemical fertilizers in the warehouse, 15 tons were transported away for the first time, and 60% of this batch of chemical fertilizers were transported away for the second time, leaving 17 tons. How many tons are there in total for this batch of fertilizer?
仓库里有一批化肥，第一次运走了15吨，第二次运走这批化肥的60%，还剩17吨．这批化肥一共有多少吨？
<gadget id="calculator">15 + 17</gadget>
<output>32</output>

<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">32 / (2/5)</gadget>
<output>80</output>

<result>80</result>