There are 650 ducks in the breeding factory, which is 150 less than the geese. How many percent are the ducks less than the geese?
饲养厂养鸭650只，比养的鹅少150只，养的鸭比鹅少百分之几？
<gadget id="calculator">150 + 650</gadget>
<output>800</output>

<gadget id="calculator">150 / 800</gadget>
<output>3/16 = around 0.1875</output>

<result>3/16 = around 0.1875</result>