Three classmates kicked shuttlecocks, Xiaohong kicked 72, Xiaoguang kicked the number of Xiaohong's (7/8), and Xiaomei's kicked number was Xiaoguang's (5/7). How many times did Xiaomei kick?
三个同学踢毽子，小红踢了72个，小光踢的个数是小红的(7/8)，小梅踢的个数是小光的(5/7)．小梅踢了多少个？
<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">72 * (7/8) * (5/7)</gadget>
<output>45</output>

<result>45</result>