Alright, let's work through 66380118 times 65823761 step by step
66380118 × 65823761 = 65823761 × (66380118)
+ 65823761 × 8 producing 526590088
+ 65823761 × 10 which equals 658237610
+ 65823761 × 100 that results in 6582376100
+ 65823761 × 0000 resulting in 0
+ 65823761 × 80000 what gives us 5265900880000
+ 65823761 × 300000 that equals 19747128300000
+ 65823761 × 6000000 which equals 394942566000000
+ 65823761 × 60000000 giving us 3949425660000000

= 4369389022383798
