According to the measurement, the water in the body of an adult accounts for about 2/3 of the body weight, while the water in the body of a child accounts for about 4/5 of the body weight. The weight of Xiao Ming, a sixth grader, is 35 kg. How many kg of water is in his body?
根据测定，成人体内的水分约占体重的(2/3)，而儿童体内的水分约占体重的(4/5)，六年级学生小明的体重为35千克，他体内的水分有多少千克？
<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>