Some fresh vegetables are brought from the market, among which radishes account for (1/5) of this batch of vegetables, and green vegetables account for 35% of this batch of vegetables. It is known that green vegetables are 450 kilograms more than radishes. How many kilograms are there in this batch of vegetables?
菜场运来一些新鲜蔬菜，其中萝卜占这批蔬菜的(1/5)，青菜占这批蔬菜的35%．已知青菜比萝卜多450千克，这批蔬菜一共有多少千克？
<gadget id="calculator">35 / 100</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(7/20) - (1/5)</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">450 / (3/20)</gadget>
<output>3_000</output>

<result>3_000</result>