Xiao Ming donated 50 yuan to the children in the disaster area. The money donated by Xiao Hua was donated by Xiao Ming (3/5), and it was donated by Xiao Hong (3/4). How much did Xiaohong donate?
小明为灾区小朋友捐款50元，小华捐的钱是小明捐的(3/5)，是小红捐的(3/4)．小红捐了多少元钱．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(3/5) / (3/4)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">50 * (4/5)</gadget>
<output>40</output>

<result>40</result>