There are (3/4) tons of rice in the warehouse, and (1/5) tons are shipped after eating 150 kilograms. How many tons of rice are there now?
仓库里有(3/4)吨大米，吃了150千克后又运来(1/5)吨，现在仓库里有大米多少吨？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">3 / 20</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">(3/4) - (3/20)</gadget>
<output>3/5 = around 0.6</output>

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

<gadget id="calculator">(3/5) + (1/5)</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>