Blood accounts for 1/13 of a person's body weight. Xiao Ming weighs 52 kilograms, how many kilograms of blood is in his body?
一个人血液占体重的(1/13)．小明体重52千克，体内血液约有多少千克？
<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>