Alright, let's work through 5458 times 1155 step by step
5458 × 1155 = 1155 × (5458)
+ 1155 × 8 that is equal 9240
+ 1155 × 50 resulting in 57750
+ 1155 × 400 which equals 462000
+ 1155 × 5000 yielding 5775000

= 6303990
