A piece of land has an area of (11/40) hectares, use (3/40) hectares to grow cabbage; use (1/40) hectares to grow carrots, how many hectares are left?
一块地，面积是(11/40)公顷，用其中的(3/40)公顷种白菜；用其中的(1/40)公顷种胡萝卜，还剩下多少公顷？
<gadget id="calculator">11 / 40</gadget>
<output>11/40 = around 0.275</output>

<gadget id="calculator">3 / 40</gadget>
<output>3/40 = around 0.075</output>

<gadget id="calculator">1 / 40</gadget>
<output>1/40 = around 0.025</output>

<gadget id="calculator">(11/40) - (3/40) - (1/40)</gadget>
<output>7/40 = around 0.175</output>

<result>7/40 = around 0.175</result>