Alright, let's work through 65965874 times 40346361 step by step
65965874 × 40346361 = 40346361 × (65965874)
+ 40346361 × 4 what gives us 161385444
+ 40346361 × 70 yielding 2824245270
+ 40346361 × 800 producing 32277088800
+ 40346361 × 5000 resulting in 201731805000
+ 40346361 × 60000 yielding 2420781660000
+ 40346361 × 900000 which equals 36311724900000
+ 40346361 × 5000000 resulting in 201731805000000
+ 40346361 × 60000000 yielding 2420781660000000

= 2661482966084514
