A batch of fresh vegetables is shipped from the vegetable market, among which radishes account for 20% and green vegetables account for 35%. It is known that green vegetables are 450 kg more than radishes. How many kg of vegetables are there in total?
菜市场运来一批新鲜蔬菜，其中萝卜占20%，青菜占35%，已知青菜比萝卜多450千克，这批蔬菜共多少千克？
<gadget id="calculator">35 / 100</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">20 / 100</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>