Alright, let's work through 7548 times 6421 step by step
7548 × 6421 = 6421 × (7548)
+ 6421 × 8 that is equal 51368
+ 6421 × 40 that results in 256840
+ 6421 × 500 giving us 3210500
+ 6421 × 7000 that equals 44947000

= 48465708
