field is prepared to grow two kinds of vegetables A and B. Among them, the land of planting A vegetables occupies (3/10) of this land. According to the market situation, it is necessary to make the area of the two kinds of vegetable fields the same size, then the ((())/(())) of the second vegetable field should be changed to the type A vegetable.
一块地准备种甲、乙两种蔬菜．其中种甲蔬菜的地占这块地的(3/10)．根据市场情况，需要把两种菜地的面积变得一样大，那么应把乙蔬菜地的((())/(()))改为种甲蔬菜．
<gadget id="calculator">10 - 3</gadget>
<output>7</output>

<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">7 - 5</gadget>
<output>2</output>

<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<result>2/7 = around 0.285714</result>