Car A and Car B transport a batch of sand at the same time, the task of car A is (2/5) of car B, and the tonnage transported by car A per hour is (3/4) of car B. When car A completes the task, Car B has 35 tons left undelivered, how many tons is the task of car B?
甲，乙两车同时运一批沙子，甲车的任务是乙车的(2/5)，甲车每小时运的吨数是乙车的(3/4)，当甲车完成任务时，乙车还剩35吨没有运，乙车的任务是多少吨？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(2/5) / (3/4)</gadget>
<output>8/15 = around 0.533333</output>

<gadget id="calculator">1 - (8/15)</gadget>
<output>7/15 = around 0.466667</output>

<gadget id="calculator">35 / (7/15)</gadget>
<output>75</output>

<result>75</result>