Alright, let's work through 3447 times 6520 step by step
3447 × 6520 = 6520 × (3447)
+ 6520 × 7 that equals 45640
+ 6520 × 40 what gives us 260800
+ 6520 × 400 that equals 2608000
+ 6520 × 3000 giving us 19560000

= 22474440
