According to the measurement, water in a child's body accounts for 4/5 of his body weight. Xiaoqing, a sixth grader, weighs 35 kilograms. How many kilograms does the water in his body weigh?
根据测定，儿童体内的水分占体重的(4/5)，六年级同学小青的体重是35千克，他体内的水分重多少千克？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">35 * (4/5)</gadget>
<output>28</output>

<result>28</result>