Alright, let's work through 64761987 times 45697031 step by step
64761987 × 45697031 = 45697031 × (64761987)
+ 45697031 × 7 that results in 319879217
+ 45697031 × 80 which equals 3655762480
+ 45697031 × 900 giving us 41127327900
+ 45697031 × 1000 producing 45697031000
+ 45697031 × 60000 resulting in 2741821860000
+ 45697031 × 700000 that equals 31987921700000
+ 45697031 × 4000000 that results in 182788124000000
+ 45697031 × 60000000 which equals 2741821860000000

= 2959430527560597
