Warehouse A stores 18 tons of grain, and 3 tons are transported from Warehouse A to Warehouse B. The two warehouses store the same amount of grain. How much more Warehouse A than Warehouse B
甲仓存粮18吨，从甲仓运3吨放入乙仓，两仓存粮同样多，原来甲仓比乙仓多多少
<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">18 - 6</gadget>
<output>12</output>

<gadget id="calculator">2 / 12</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">3 * (1/6)</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>