Alright, let's work through 63797658 times 85339828 step by step
63797658 × 85339828 = 85339828 × (63797658)
+ 85339828 × 8 that is equal 682718624
+ 85339828 × 50 that results in 4266991400
+ 85339828 × 600 which equals 51203896800
+ 85339828 × 7000 resulting in 597378796000
+ 85339828 × 90000 yielding 7680584520000
+ 85339828 × 700000 producing 59737879600000
+ 85339828 × 3000000 yielding 256019484000000
+ 85339828 × 60000000 producing 5120389680000000

= 5444481160522824
