The two warehouses have a total of 240 tons of grain, transferred from warehouse A (3/5), and transferred 30 tons from warehouse B, the amount of grain in the two warehouses is equal, how many tons of grain was originally in warehouse B?
两仓库一共有粮食240t，从甲仓库调走(3/5)，从乙仓库调走30t，两仓库粮食数量相等，乙仓库原有粮食多少吨？
<gadget id="calculator">240 - 30</gadget>
<output>210</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 + (2/5)</gadget>
<output>7/5 = around 1.4</output>

<gadget id="calculator">210 / (7/5)</gadget>
<output>150</output>

<gadget id="calculator">240 - 150</gadget>
<output>90</output>

<result>90</result>