There is a batch of goods in the warehouse, 85 tons were shipped out on the first day, and the rest (8/15) was shipped 3 tons less on the second day, and the rest were shipped on the third day. It is known that the third day was 15 tons less than the second day Tons, how many tons are there in this shipment?
仓库有一批货物，第一天运出85吨，第二天运了剩下的(8/15)少3吨，其余的第三天运完，已知第三天比第二天少运15吨，这批货物共有多少吨？
<gadget id="calculator">8 / 15</gadget>
<output>8/15 = around 0.533333</output>

<gadget id="calculator">7 / 15</gadget>
<output>7/15 = around 0.466667</output>

<gadget id="calculator">(8/15) - (7/15)</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">21 / (1/15)</gadget>
<output>315</output>

<gadget id="calculator">315 + 85</gadget>
<output>400</output>

<result>400</result>