Alright, let's work through 66879647 times 45647057 step by step
66879647 × 45647057 = 45647057 × (66879647)
+ 45647057 × 7 that results in 319529399
+ 45647057 × 40 producing 1825882280
+ 45647057 × 600 that results in 27388234200
+ 45647057 × 9000 what gives us 410823513000
+ 45647057 × 70000 that is equal 3195293990000
+ 45647057 × 800000 giving us 36517645600000
+ 45647057 × 6000000 resulting in 273882342000000
+ 45647057 × 60000000 which equals 2738823420000000

= 3052859058748879
