There are 80 pots of roses in the flower garden, and the roses are roses (7/8) and chrysanthemums (5/6). How many pots are there chrysanthemums?
花圃里有玫瑰花80盆，月季花是玫瑰花的(7/8)，是菊花的(5/6)．菊花有多少盆？
<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">(7/8) / (5/6)</gadget>
<output>21/20 = around 1.05</output>

<gadget id="calculator">80 * (21/20)</gadget>
<output>84</output>

<result>84</result>