Alright, let's work through 35965951 times 81665485 step by step
35965951 × 81665485 = 81665485 × (35965951)
+ 81665485 × 1 that equals 81665485
+ 81665485 × 50 that results in 4083274250
+ 81665485 × 900 that results in 73498936500
+ 81665485 × 5000 that equals 408327425000
+ 81665485 × 60000 yielding 4899929100000
+ 81665485 × 900000 that equals 73498936500000
+ 81665485 × 5000000 giving us 408327425000000
+ 81665485 × 30000000 yielding 2449964550000000

= 2937176831901235
