Alright, let's work through 16688677 times 79311673 step by step
16688677 × 79311673 = 79311673 × (16688677)
+ 79311673 × 7 producing 555181711
+ 79311673 × 70 which equals 5551817110
+ 79311673 × 600 producing 47587003800
+ 79311673 × 8000 which equals 634493384000
+ 79311673 × 80000 yielding 6344933840000
+ 79311673 × 600000 which equals 47587003800000
+ 79311673 × 6000000 which equals 475870038000000
+ 79311673 × 10000000 producing 793116730000000

= 1323606893026621
