The flow velocity of human blood in veins is 20 cm/s, and the velocity in capillaries is 1/40 of that in veins; how many centimeters per second does blood flow in capillaries.
人体血液在静脉中的流动速度是20厘米/秒，在毛细血管中的速度是静脉中的(1/40)；血液在毛细血管中每秒流动多少厘米．
<gadget id="calculator">1 / 40</gadget>
<output>1/40 = around 0.025</output>

<gadget id="calculator">20 * (1/40)</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>