Ineed solving 't give me answers walk me through it

Do the same process for each of the 3 

you have miles per how many minutes and you need miles per hour
you know 60 minutes make 1 hour  convert the minutes to hours 
this will gives you miles per equivalent hour
you need miles per 1 hour 

Here is number 1  
1) 5 miles in 20 minutes 
    5 miles in (20/60) hr  = 5 miles in 1/3 hr 
to get 1 hr multiply by 3 
equation so keep the balance 
5 * 3 = 15 
rate = 15 miles per hour.

same process for the others

820,000 is the answr