Alright, let's work through 3980 times 8734 step by step
3980 × 8734 = 8734 × (3980)
+ 8734 × 0 which equals 0
+ 8734 × 80 that results in 698720
+ 8734 × 900 yielding 7860600
+ 8734 × 3000 resulting in 26202000

= 34761320
