A pesticide is prepared by mixing liquid medicine and water at a ratio of 1:400. Now there are 5 grams of liquid medicine. How many grams of this pesticide can be prepared?
一种农药是药液和水按1：400配制而成的，现在有5克药液，能配制这种农药多少克．
<gadget id="calculator">1 + 400</gadget>
<output>401</output>

<gadget id="calculator">1 / 401</gadget>
<output>1/401 = around 0.002494</output>

<gadget id="calculator">5 / (1/401)</gadget>
<output>2_005</output>

<result>2_005</result>