No problem, we've got 4048 and 1015 to multiply
4048 × 1015 = 1015 × (4048)
+ 1015 × 8 which equals 8120
+ 1015 × 40 what gives us 40600
+ 1015 × 000 resulting in 0
+ 1015 × 4000 that equals 4060000

= 4108720
