The blood on an adult's body accounts for about 1/13. How many kilograms of blood does a person weighing 65 kilograms weigh?
一名成年人身上的血液约占重重的(1/13)．体重65千克的人，血液重多少千克？
<gadget id="calculator">1 / 13</gadget>
<output>1/13 = around 0.076923</output>

<gadget id="calculator">65 * (1/13)</gadget>
<output>5</output>

<result>5</result>