A certain distance, A takes 20 minutes to complete the journey, and B takes 30 minutes to complete the journey, what is the speed of A at the speed of B
一段路，甲走完全程需要20分钟，乙走完全程需要30分钟，甲的速度是乙的多少
<gadget id="calculator">1 / 20</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 / 30</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">(1/20) / (1/30)</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>