Two warehouses, A and B, store rice respectively, and warehouse A stores 90 tons of rice. (2/3) of the rice in warehouse A is equal to (4/5) of the rice in warehouse B. How many tons of rice are there in warehouse B?
甲、乙两个仓库分别存有大米，其中甲仓库存有90吨大米．甲仓库大米的(2/3)和乙仓库大米的(4/5)相等，乙仓库存有多少吨大米？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

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

<gadget id="calculator">(2/3) / (4/5)</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">90 * (5/6)</gadget>
<output>75</output>

<result>75</result>