40 kilograms of rapeseed can be squeezed to produce 16 kilograms of rapeseed oil. What is the oil yield of this batch of rapeseed?
40千克的油菜籽，可以榨出菜油16千克，这批菜籽的出油率是多少？
<gadget id="calculator">16 / 40</gadget>
<output>2/5 = around 0.4</output>

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

<gadget id="calculator">(2/5) * 1</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>