Alright, let's work through 16540369 times 40311024 step by step
16540369 × 40311024 = 40311024 × (16540369)
+ 40311024 × 9 which equals 362799216
+ 40311024 × 60 that results in 2418661440
+ 40311024 × 300 that equals 12093307200
+ 40311024 × 0000 resulting in 0
+ 40311024 × 40000 that is equal 1612440960000
+ 40311024 × 500000 what gives us 20155512000000
+ 40311024 × 6000000 which equals 241866144000000
+ 40311024 × 10000000 yielding 403110240000000

= 666759211727856
