Alright, let's work through 1598 times 8678 step by step
1598 × 8678 = 8678 × (1598)
+ 8678 × 8 that is equal 69424
+ 8678 × 90 giving us 781020
+ 8678 × 500 giving us 4339000
+ 8678 × 1000 that is equal 8678000

= 13867444
