No problem, we've got 7829967 and 511059 to multiply
7829967 × 511059 = 511059 × (7829967)
+ 511059 × 7 giving us 3577413
+ 511059 × 60 which equals 30663540
+ 511059 × 900 resulting in 459953100
+ 511059 × 9000 resulting in 4599531000
+ 511059 × 20000 which equals 10221180000
+ 511059 × 800000 giving us 408847200000
+ 511059 × 7000000 that is equal 3577413000000

= 4001575105053
