There is 400 kg of oil in barrel A, and 240 kg in barrel B. Now take out the same weight of oil from the two barrels. The weight of the remaining oil is exactly 5 times that of barrel A. How many kilograms of oil is left in barrel A? ．
甲桶有油400千克，乙桶有油240千克，现在从两个桶中取出相同重量的油，剩下油的重量，甲桶正好是乙桶的5倍，甲桶剩下多少千克的油．
<gadget id="calculator">400 - 240</gadget>
<output>160</output>

<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">160 / 4</gadget>
<output>40</output>

<gadget id="calculator">40 * 5</gadget>
<output>200</output>

<result>200</result>