The cafeteria shipped (3/4) tons of rice, ate (1/8) tons in the first week, and ate (1/10) tons in the second week. How many tons of this rice are left?
食堂运来(3/4)吨大米，第一周吃了(1/8)吨，第二周又吃了(1/10)吨．这些大米还剩下多少吨？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(1/8) + (1/10)</gadget>
<output>9/40 = around 0.225</output>

<gadget id="calculator">(3/4) - (9/40)</gadget>
<output>21/40 = around 0.525</output>

<result>21/40 = around 0.525</result>