There is a batch of goods, 20% of which are shipped out for the first time, and 26 tons are shipped out for the second time. At this time, the ratio of the remaining tons of goods to the number of tons shipped is 3:4, how many tons of goods are left.
有一批货物，第一次运出了20%，第二次运出了26吨，这时余下的货物吨数与运出的吨数的比是3：4，余下多少吨货物．
<gadget id="calculator">3 + 4</gadget>
<output>7</output>

<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(3/7) - (1/5)</gadget>
<output>8/35 = around 0.228571</output>

<gadget id="calculator">26 / (8/35)</gadget>
<output>455/4 = around 113.75</output>

<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">(455/4) * (4/7)</gadget>
<output>65</output>

<gadget id="calculator">65 * (4/7)</gadget>
<output>260/7 = around 37.142857</output>

<result>260/7 = around 37.142857</result>