The (1/2) of a batch of goods is 70 tons more than the (1/3) of this batch of goods. How many tons is this batch of goods in total?
一批货物的(1/2)比这批货物的(1/3)多70吨，这批货物共多少吨．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/2) - (1/3)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">70 / (1/6)</gadget>
<output>420</output>

<result>420</result>