There are two granaries, the grain stored in granary A (1/5) is equivalent to 0.3 of the grain stored in granary B, and granary A stores 1.6 million tons more grain than granary B. Then, how many tons of grain is stored in Granary B?
两个粮仓，甲粮仓存粮的(1/5)相当于乙粮仓存粮的0.3，甲粮仓比乙粮仓多存粮160万吨．那么，乙粮仓存粮多少万吨．
<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">160 * (3/10)</gadget>
<output>48</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(3/10) - (1/5)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">48 / (1/10)</gadget>
<output>480</output>

<gadget id="calculator">480 - 160</gadget>
<output>320</output>

<result>320</result>