The factor pairs of 420 are:
1 x 420
2 x 210
3 x 140
4 x 105
5 x 84
6 x 70
7 x 60
10 x 42
12 x 35
14 x 30
15 x 28
20 x 21
7890
420
The answer is 20x21=420 and 20+21=41
420
How about: 5*84 = 420 as one example
140 times (420 ÷ 3 = 140).
420 = 2940
It goes: 420/5 = 84 times
420 / 7 = 60
420 miles = 675.92448 km
420 ÷ 15 = 28
It is: 420/24 times 100 = 1750%
42 x 10 = 420