For a pile of goods, (1/4) of the total amount was removed on the first day, and (2/5) of the total amount was removed on the second day, leaving 35 tons. How many tons were shipped on the first day?
一堆货物，第一天运走了总数的(1/4)，第二天运走了总数的(2/5)还剩35吨．第一天运走多少吨？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (1/4) - (2/5)</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">35 / (7/20)</gadget>
<output>100</output>

<gadget id="calculator">100 * (1/4)</gadget>
<output>25</output>

<result>25</result>