Alright, let's work through 91374646 times 87436379 step by step
91374646 × 87436379 = 87436379 × (91374646)
+ 87436379 × 6 yielding 524618274
+ 87436379 × 40 that equals 3497455160
+ 87436379 × 600 producing 52461827400
+ 87436379 × 4000 which equals 349745516000
+ 87436379 × 70000 resulting in 6120546530000
+ 87436379 × 300000 that equals 26230913700000
+ 87436379 × 1000000 producing 87436379000000
+ 87436379 × 90000000 that equals 7869274110000000

= 7989468178646834
