Alright, let's work through 81086909 times 343354 step by step
81086909 × 343354 = 343354 × (81086909)
+ 343354 × 9 that results in 3090186
+ 343354 × 00 that results in 0
+ 343354 × 900 that equals 309018600
+ 343354 × 6000 producing 2060124000
+ 343354 × 80000 what gives us 27468320000
+ 343354 × 000000 that is equal 0
+ 343354 × 1000000 that equals 343354000000
+ 343354 × 80000000 that results in 27468320000000

= 27841514552786
