Squeeze a pesticide with water to prepare a pesticide. The mass ratio of the pesticide to water is 1:50. If 0.75 kg of pesticide is used to prepare this pesticide, how many kilograms of water should be added?
用药挤和水配置一种农药，药和水的质量比是1：50，用0.75千克药剂配制这种农药，需要加水多少千克？
<gadget id="calculator">1 / 50</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">0.75 / (1/50)</gadget>
<output>37.5</output>

<result>37.5</result>