Factory A belongs to Factory B (4/5). If 70 people are transferred from Factory B to Factory A, then Factory B will be less than Factory A (1/3). How many people did Factory B have?
甲厂是乙厂的(4/5)，从乙厂调70人到甲厂，则乙厂又比甲厂少(1/3)，原来乙厂有多少．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">70 * (1/3)</gadget>
<output>70/3 = around 23.333333</output>

<gadget id="calculator">70 - (70/3)</gadget>
<output>140/3 = around 46.666667</output>

<gadget id="calculator">70 + (140/3)</gadget>
<output>350/3 = around 116.666667</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(4/5) * (1/3)</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">(4/15) - (4/5)</gadget>
<output>-8/15 = around -0.533333</output>

<gadget id="calculator">1 + (-8/15)</gadget>
<output>7/15 = around 0.466667</output>

<gadget id="calculator">(350/3) / (7/15)</gadget>
<output>250</output>

<result>250</result>