Alright, let's work through 41991311 times 7976827 step by step
41991311 × 7976827 = 7976827 × (41991311)
+ 7976827 × 1 producing 7976827
+ 7976827 × 10 what gives us 79768270
+ 7976827 × 300 giving us 2393048100
+ 7976827 × 1000 what gives us 7976827000
+ 7976827 × 90000 yielding 717914430000
+ 7976827 × 900000 which equals 7179144300000
+ 7976827 × 1000000 which equals 7976827000000
+ 7976827 × 40000000 yielding 319073080000000

= 334957423350197
