Alright, let's work through 66399399 times 51576028 step by step
66399399 × 51576028 = 51576028 × (66399399)
+ 51576028 × 9 producing 464184252
+ 51576028 × 90 what gives us 4641842520
+ 51576028 × 300 resulting in 15472808400
+ 51576028 × 9000 what gives us 464184252000
+ 51576028 × 90000 what gives us 4641842520000
+ 51576028 × 300000 resulting in 15472808400000
+ 51576028 × 6000000 giving us 309456168000000
+ 51576028 × 60000000 which equals 3094561680000000

= 3424617262007172
