Uncle Zhang raised 240 geese, and the number of geese was less than that of ducks (1/4). How many ducks do you have?
张大爷养了240只鹅，鹅的只数比鸭少(1/4)．养了多少只鸭？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

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

<gadget id="calculator">240 / (3/4)</gadget>
<output>320</output>

<result>320</result>