piece of land has 48 hectares, 1/4 of it was plowed on the first day, 40% of it was plowed on the second day, how many more hectares were plowed on the second day than on the first day?
一块地有48公顷，第一天耕了它的(1/4)，第二天耕了它的40%，第二天比第一天多耕多少公顷？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(2/5) - (1/4)</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">48 * (3/20)</gadget>
<output>36/5 = around 7.2</output>

<result>36/5 = around 7.2</result>