Alright, let's work through 4488 times 7791 step by step
4488 × 7791 = 7791 × (4488)
+ 7791 × 8 giving us 62328
+ 7791 × 80 giving us 623280
+ 7791 × 400 that equals 3116400
+ 7791 × 4000 that is equal 31164000

= 34966008
