Alright, let's work through 28428239 times 38734109 step by step
28428239 × 38734109 = 38734109 × (28428239)
+ 38734109 × 9 which equals 348606981
+ 38734109 × 30 yielding 1162023270
+ 38734109 × 200 resulting in 7746821800
+ 38734109 × 8000 resulting in 309872872000
+ 38734109 × 20000 that equals 774682180000
+ 38734109 × 400000 giving us 15493643600000
+ 38734109 × 8000000 which equals 309872872000000
+ 38734109 × 20000000 yielding 774682180000000

= 1101142508104051
