Uncle Wang's family raised 25 ducks, and the number of chickens was four times that of ducks. How many more chickens than ducks?
王大伯家养了25只鸭，鸡的只数是鸭的4倍．鸡比鸭多多少只？
<gadget id="calculator">25 * 4</gadget>
<output>100</output>

<gadget id="calculator">100 - 25</gadget>
<output>75</output>

<result>75</result>