Blood accounts for 1/13 of a person's weight. Xiaohua's weight is 52kg. How many kilograms does his blood have?
血液占一个人体重的(1/13)，小华的体重是52kg，他的血液约有多少千克．
<gadget id="calculator">1 / 13</gadget>
<output>1/13 = around 0.076923</output>

<gadget id="calculator">52 * (1/13)</gadget>
<output>4</output>

<result>4</result>