The vegetable farm brings in (8/3) tons of cabbage, the cucumbers shipped are cabbage (9/10), the cucumbers shipped are less than radishes (1/7), how many tons of radishes are shipped.
菜场运来白菜(8/3)吨，运来黄瓜是白菜的(9/10)，运来的黄瓜比萝卜少(1/7)，运来的萝卜多少吨．
<gadget id="calculator">8 / 3</gadget>
<output>8/3 = around 2.666667</output>

<gadget id="calculator">9 / 10</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">1 - (1/7)</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">(9/10) / (6/7)</gadget>
<output>21/20 = around 1.05</output>

<gadget id="calculator">(8/3) * (21/20)</gadget>
<output>14/5 = around 2.8</output>

<result>14/5 = around 2.8</result>