There are 84 pear trees in the orchard, the number of apple trees is 5/6 of that of pear trees, and the number of peach trees is 6/7 of that of apple trees. How many peach trees are there in the orchard?
果园里有梨树84棵，苹果树的棵数是梨树的(5/6)，桃树的棵数是苹果树的(6/7)，果园里有多少棵桃树？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">6 / 7</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">84 * (5/6) * (6/7)</gadget>
<output>60</output>

<result>60</result>