What is:
123 456 789 [miles/sec] → [((miles)/(day))]
Just find the number of seconds in 1 day and then multiply:
24 X 60 X 60 X 123,456,789=10,666,666,569,600=1.07 X 10^13 miles per day.
If you use dimensional analysis, it looks like this (note that the sec and the min and the hr units will cancel out laeving only mi/day)
123456789 mi x 60 sec x 60 min x 24 hr = 1.066666 x 10^13 mi
sec min hr day day
