How much is the total value of the three batches of goods? The weight ratio of the first, second and third batches of goods is 2:3:4, and the ratio of unit weight price is 6:2:5. It is known that the value of the third batch of goods is 800,000 yuan.
三批货物共值多少万元．第一、二、三批货物的重量比是2：3：4，单位重量价格的比是6：2：5．已知第三批货物值80万元．
<gadget id="calculator">12 + 6 + 20</gadget>
<output>38</output>

<gadget id="calculator">20 / 38</gadget>
<output>10/19 = around 0.526316</output>

<gadget id="calculator">80 / (10/19)</gadget>
<output>152</output>

<result>152</result>