The distance traveled by A in 2 hours is equal to the distance traveled by B in (1/2) hour, how much slower is A's speed than B's speed?
甲2小时所行的路程和乙(1/2)小时所行路程相等，甲的速度比乙的速度慢百分之几？
<gadget id="calculator">4 - 1</gadget>
<output>3</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<result>3/4 = around 0.75</result>