A tractor (1/2) hours cultivates (3/4) hectares, how many hours does this tractor cultivate (2/5) hectares? What is the column
一台拖拉机(1/2)小时耕地(3/4)公顷，这台拖拉机多少小时耕地(2/5)公顷？列式为多少
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(3/4) / (1/2)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(2/5) / (3/2)</gadget>
<output>4/15 = around 0.266667</output>

<result>4/15 = around 0.266667</result>