Alright, let's work through 18965547 times 42348537 step by step
18965547 × 42348537 = 42348537 × (18965547)
+ 42348537 × 7 that is equal 296439759
+ 42348537 × 40 that results in 1693941480
+ 42348537 × 500 giving us 21174268500
+ 42348537 × 5000 that results in 211742685000
+ 42348537 × 60000 that equals 2540912220000
+ 42348537 × 900000 that is equal 38113683300000
+ 42348537 × 8000000 that results in 338788296000000
+ 42348537 × 10000000 what gives us 423485370000000

= 803163168854739
