Fangfang walks 4.8km per hour to get there in 0.5 hours from home to Xinhua Bookstore. If she walks 3.2km per hour, how many hours will it take to get there?
芳芳从家到新华书店，每小时走4.8km，0.5小时可以到达，如果每小时走3.2km，要走多少小时才能到达？
<gadget id="calculator">0.5 / 3.2</gadget>
<output>0.15625</output>

<gadget id="calculator">4.8 * 0.15625</gadget>
<output>0.75</output>

<result>0.75</result>