A batch of cement, after transporting out (5/8) of the total, then transported in another 70 tons. Now the cement quantity is exactly 62.5% of the original weight. How many tons did this batch of cement originally weigh?
一批水泥，运出总数的(5/8)后，又运进70吨，现在水泥数量正好是原重量的62.5%，这批水泥原重多少吨？
<gadget id="calculator">62.5 / 100</gadget>
<output>0.625</output>

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">1 - (5/8)</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">0.625 - (3/8)</gadget>
<output>0.25</output>

<gadget id="calculator">70 / 0.25</gadget>
<output>280</output>

<result>280</result>