Alright, let's work through 84251961 times 61725205 step by step
84251961 × 61725205 = 61725205 × (84251961)
+ 61725205 × 1 giving us 61725205
+ 61725205 × 60 producing 3703512300
+ 61725205 × 900 resulting in 55552684500
+ 61725205 × 1000 what gives us 61725205000
+ 61725205 × 50000 yielding 3086260250000
+ 61725205 × 200000 what gives us 12345041000000
+ 61725205 × 4000000 resulting in 246900820000000
+ 61725205 × 80000000 yielding 4938016400000000

= 5200469564377005
