There are 15 tons of vegetables in the vegetable wholesale market, 15% of the total is removed in the morning and 12 tons in the afternoon. How many tons of vegetables are left?
蔬菜批发市场有15吨蔬菜，上午运走总数的15%，下午运走12吨．还剩多少吨蔬菜？
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">15 * (3/20)</gadget>
<output>9/4 = around 2.25</output>

<gadget id="calculator">(9/4) + 12</gadget>
<output>57/4 = around 14.25</output>

<gadget id="calculator">15 - (57/4)</gadget>
<output>3/4 = around 0.75</output>

<result>3/4 = around 0.75</result>