Pippi measured about 8 drops in 1 ml of water. A certain time Pipi got sick and needed an infusion of 250ml. If 64 drops can be infused per minute, how long will it take Pippi to infuse 250 ml of liquid medicine?
皮皮测得1毫升的水大约有8滴．某次皮皮生病需要输液250毫升．若每分可以输液64滴，皮皮输完250毫升的药液大约需要多少时间？
<gadget id="calculator">8 / 64</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">250 * (1/8)</gadget>
<output>125/4 = around 31.25</output>

<result>125/4 = around 31.25</result>