There is a batch of goods at the station, 60% of the total number is transported on the first day, 50 tons are transported on the second day, and the remaining (7/40) is not transported. How many tons are there in total in this batch?
车站有一批货物，第一天运走总数的60%，第二天运走了50吨，还剩(7/40)没有运走，这批货物一共有多少吨？
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">7 / 40</gadget>
<output>7/40 = around 0.175</output>

<gadget id="calculator">1 - (3/5) - (7/40)</gadget>
<output>9/40 = around 0.225</output>

<gadget id="calculator">50 / (9/40)</gadget>
<output>2_000/9 = around 222.222222</output>

<result>2_000/9 = around 222.222222</result>