Alright, let's work through 65997945 times 42566561 step by step
65997945 × 42566561 = 42566561 × (65997945)
+ 42566561 × 5 giving us 212832805
+ 42566561 × 40 which equals 1702662440
+ 42566561 × 900 that is equal 38309904900
+ 42566561 × 7000 giving us 297965927000
+ 42566561 × 90000 what gives us 3830990490000
+ 42566561 × 900000 producing 38309904900000
+ 42566561 × 5000000 giving us 212832805000000
+ 42566561 × 60000000 that is equal 2553993660000000

= 2809305551717145
