Lele has 36 stamps, Xiaofang's stamp is Lele's (5/6), Dongdong's stamp is Xiaofang's (3/5). How many stamps does Dongdong have?
乐乐有36张邮票，小芳的邮票是乐乐的(5/6)，东东的邮票是小芳的(3/5)．东东有多少张邮票？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">36 * (5/6) * (3/5)</gadget>
<output>18</output>

<result>18</result>