A and B have two barrels of oil. The weight of oil in barrel A is 120 kg less than that in barrel B. If 70 kg is taken from barrel B and put into barrel A, the weight of oil in barrel A is more than that in barrel B (1/8). How many kilograms of oil is in barrel B?
甲乙两桶油，甲桶装油的重量比乙桶少120千克，如果从乙桶取出70千克放入甲桶中，则甲桶中油的重量反而比乙桶多(1/8)．原来乙桶有油多少千克？
<gadget id="calculator">70 * 2</gadget>
<output>140</output>

<gadget id="calculator">140 - 120</gadget>
<output>20</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">20 / (1/8)</gadget>
<output>160</output>

<gadget id="calculator">160 + 70</gadget>
<output>230</output>

<result>230</result>