It takes (1/4) sheet of paper to cut a flower. Xiaoli cut 9 flowers and Xiaohong cut 11 flowers. How much paper did they use?
剪一朵花用(1/4)张纸，小丽剪了9朵，小红剪了11朵，他们一共用了多少纸？
<gadget id="calculator">9 + 11</gadget>
<output>20</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">20 * (1/4)</gadget>
<output>5</output>

<result>5</result>