Alright, let's work through 61907691 times 31628225 step by step
61907691 × 31628225 = 31628225 × (61907691)
+ 31628225 × 1 that results in 31628225
+ 31628225 × 90 which equals 2846540250
+ 31628225 × 600 giving us 18976935000
+ 31628225 × 7000 that results in 221397575000
+ 31628225 × 00000 that equals 0
+ 31628225 × 900000 what gives us 28465402500000
+ 31628225 × 1000000 producing 31628225000000
+ 31628225 × 60000000 what gives us 1897693500000000

= 1958030380178475
