Alright, let's work through 49715939 times 90826991 step by step
49715939 × 90826991 = 90826991 × (49715939)
+ 90826991 × 9 that results in 817442919
+ 90826991 × 30 yielding 2724809730
+ 90826991 × 900 resulting in 81744291900
+ 90826991 × 5000 giving us 454134955000
+ 90826991 × 10000 yielding 908269910000
+ 90826991 × 700000 that is equal 63578893700000
+ 90826991 × 9000000 that equals 817442919000000
+ 90826991 × 40000000 giving us 3633079640000000

= 4515549144109549
