professional planting household shipped a batch of pesticides. The total amount (4/7) was used on the first day, which was 12 kg more than twice the amount used on the second day. The ratio of the pesticides used to the remaining pesticides at this time was 27:8 , How many kilograms of this batch of pesticides.
某种植专业户运来一批农药，第一天用去总数的(4/7)，比第二天用去的2倍还多12千克，这时用去的与余下的农药比是27：8，这批农药有多少千克．
<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">27 + 8</gadget>
<output>35</output>

<gadget id="calculator">27 / 35</gadget>
<output>27/35 = around 0.771429</output>

<gadget id="calculator">(27/35) - (4/7)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) * 2</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(4/7) - (2/5)</gadget>
<output>6/35 = around 0.171429</output>

<gadget id="calculator">12 / (6/35)</gadget>
<output>70</output>

<result>70</result>