Alright, let's work through 7140634 times 66304661 step by step
7140634 × 66304661 = 66304661 × (7140634)
+ 66304661 × 4 what gives us 265218644
+ 66304661 × 30 what gives us 1989139830
+ 66304661 × 600 yielding 39782796600
+ 66304661 × 0000 yielding 0
+ 66304661 × 40000 yielding 2652186440000
+ 66304661 × 100000 what gives us 6630466100000
+ 66304661 × 7000000 that equals 464132627000000

= 473457316695074
