Alright, let's work through 42973121 times 16539492 step by step
42973121 × 16539492 = 16539492 × (42973121)
+ 16539492 × 1 that is equal 16539492
+ 16539492 × 20 resulting in 330789840
+ 16539492 × 100 that results in 1653949200
+ 16539492 × 3000 resulting in 49618476000
+ 16539492 × 70000 resulting in 1157764440000
+ 16539492 × 900000 yielding 14885542800000
+ 16539492 × 2000000 which equals 33078984000000
+ 16539492 × 40000000 giving us 661579680000000

= 710753590994532
