Alright, let's work through 4345 times 8578 step by step
4345 × 8578 = 8578 × (4345)
+ 8578 × 5 that is equal 42890
+ 8578 × 40 yielding 343120
+ 8578 × 300 which equals 2573400
+ 8578 × 4000 yielding 34312000

= 37271410
