The flow velocity of blood in the human body in the arteries is 0.5m per second, which is more (5/18)m than (2/3) the flow velocity in the veins, so what is the velocity of the blood flowing in the veins? (column equation solution)
人体中的血液在动脉中的流速是每秒0.5m，比在静脉中流动速度的(2/3)还多(5/18)m，那么血液在静脉中流动的速度是多少？(列方程解答)
<gadget id="calculator">5 / 18</gadget>
<output>5/18 = around 0.277778</output>

<gadget id="calculator">0.5 - (5/18)</gadget>
<output>0.222222</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">0.222222 / (2/3)</gadget>
<output>0.333333</output>

<result>0.333333</result>