Alright, let's work through 71652497 times 27901809 step by step
71652497 × 27901809 = 27901809 × (71652497)
+ 27901809 × 7 producing 195312663
+ 27901809 × 90 that results in 2511162810
+ 27901809 × 400 yielding 11160723600
+ 27901809 × 2000 yielding 55803618000
+ 27901809 × 50000 that is equal 1395090450000
+ 27901809 × 600000 which equals 16741085400000
+ 27901809 × 1000000 which equals 27901809000000
+ 27901809 × 70000000 what gives us 1953126630000000

= 1999234285667073
