Li Ming has 72 stamps, Xiaoxin's stamp is Li Ming's (5/6), Zhang Gang's stamp is Xiaoxin's (3/4), how many stamps does Zhang Gang have?
李明同学有72枚邮票，小新的邮票是李明的(5/6)，张刚的邮票又是小新的(3/4)，张刚有多少枚邮票？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

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

<gadget id="calculator">72 * (5/6) * (3/4)</gadget>
<output>45</output>

<result>45</result>