People cannot live without water. Adults rely on drinking water, water from food and water released during oxidation in the body every day. The ratio of these three water sources is 47:39:14. An adult needs about (5/2) kilograms of water per day. How many kilograms of water do you need to drink per day to meet your needs?
人离不开水，成年人每天体内的水分靠喝水、来自食物中的水和体内氧化时释放的水．这三种水来源的比是47：39：14．一个成年人每天大约需要(5/2)千克水．每天要喝多少千克水才能满足需要？
<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">47 + 39 + 14</gadget>
<output>100</output>

<gadget id="calculator">47 / 100</gadget>
<output>47/100 = around 0.47</output>

<gadget id="calculator">(5/2) * (47/100)</gadget>
<output>47/40 = around 1.175</output>

<result>47/40 = around 1.175</result>