Xiaoguang donated 36 yuan to the children in the disaster area. The money Xiaoli donated belonged to Xiaoguang (7/9). How much did Xiaoli donate to the children in the disaster area?
小光为灾区小朋友捐款36元，小丽捐的钱是小光的(7/9)，小丽给灾区小朋友捐款多少元．
<gadget id="calculator">7 / 9</gadget>
<output>7/9 = around 0.777778</output>

<gadget id="calculator">36 * (7/9)</gadget>
<output>28</output>

<result>28</result>