Alright, let's work through 49288379 times 17458807 step by step
49288379 × 17458807 = 17458807 × (49288379)
+ 17458807 × 9 resulting in 157129263
+ 17458807 × 70 giving us 1222116490
+ 17458807 × 300 yielding 5237642100
+ 17458807 × 8000 resulting in 139670456000
+ 17458807 × 80000 giving us 1396704560000
+ 17458807 × 200000 that equals 3491761400000
+ 17458807 × 9000000 resulting in 157129263000000
+ 17458807 × 40000000 that results in 698352280000000

= 860516296303853
