Alright, let's work through 1864 times 3709 step by step
1864 × 3709 = 3709 × (1864)
+ 3709 × 4 what gives us 14836
+ 3709 × 60 which equals 222540
+ 3709 × 800 that equals 2967200
+ 3709 × 1000 yielding 3709000

= 6913576
