Alright, let's work through 8337942 times 45394407 step by step
8337942 × 45394407 = 45394407 × (8337942)
+ 45394407 × 2 that equals 90788814
+ 45394407 × 40 resulting in 1815776280
+ 45394407 × 900 resulting in 40854966300
+ 45394407 × 7000 resulting in 317760849000
+ 45394407 × 30000 that equals 1361832210000
+ 45394407 × 300000 that equals 13618322100000
+ 45394407 × 8000000 that equals 363155256000000

= 378495932690394
