2 tons of soybeans can extract 300 kilograms of oil. What is the oil yield of soybeans?
2吨大豆可榨油300千克，大豆的出油率是多少？
<gadget id="calculator">2 * 1_000</gadget>
<output>2_000</output>

<gadget id="calculator">300 / 2_000</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(3/20) * 1</gadget>
<output>3/20 = around 0.15</output>

<result>3/20 = around 0.15</result>