Xiao Wang bought 21 kilograms of vegetables, the vegetables he bought were radish (7/8), and the peppers he bought were radish (5/6). How many kilograms of chili did Xiao Wang buy?
小王买了21千克青菜，买的青菜是萝卜的(7/8)，买的辣椒是萝卜的(5/6)．小王买了辣椒多少千克？
<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">21 / (7/8)</gadget>
<output>24</output>

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

<gadget id="calculator">24 * (5/6)</gadget>
<output>20</output>

<result>20</result>