Alright, let's work through 23463799 times 42138304 step by step
23463799 × 42138304 = 42138304 × (23463799)
+ 42138304 × 9 that is equal 379244736
+ 42138304 × 90 that results in 3792447360
+ 42138304 × 700 yielding 29496812800
+ 42138304 × 3000 producing 126414912000
+ 42138304 × 60000 which equals 2528298240000
+ 42138304 × 400000 that results in 16855321600000
+ 42138304 × 3000000 giving us 126414912000000
+ 42138304 × 20000000 resulting in 842766080000000

= 988724695256896
