If I drove 3078 miles on Monday an drove 582 miles on Tuesday how many miles did I drive altogether.
3078+582 = 3660
=3*1000 + 0*100 + 7*10 +8*1
+0*1000 + 5*100 + 8*10 +2*1
=3*1000 + 5*100 +15*10 +10*1
=3*1000 + 6*100 + 5*10 +10*1
=3*1000 + 6*100 + 6*10 + 0*1
= 3660