A vegetable field has (4/5) hectares. If you kill insects on (1/2) hectare vegetable field, you need about (3/8) kilograms of pesticides. About how many kilograms of pesticides?
一块菜地有(4/5)公顷．如果给(1/2)公顷菜地杀虫，大约要(3/8)千克农药．大约要多少千克农药？
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

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

<gadget id="calculator">(3/8) / (1/2)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(3/4) * (4/5)</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>