A bottle of "84" disinfectant stated: When cleaning the bathtub, the original solution and water should be prepared in a ratio of 2:753. Grandma Li poured out 12 grams of the original solution, cleaned the bathtub, and helped Grandma Li calculate how many grams of water should be added as required ? (Solve with ratio)
一瓶"84"消毒液写明：清洗浴缸时，需将原液和清水按2：753比例配制，李奶奶倒出原液12克，清洗浴缸，帮李奶奶算一下，按要求需加多少克清水？(用比例解)
<gadget id="calculator">753 / 2</gadget>
<output>753/2 = around 376.5</output>

<gadget id="calculator">12 * (753/2)</gadget>
<output>4_518</output>

<result>4_518</result>