Alright, let's work through 1661 times 4620 step by step
1661 × 4620 = 4620 × (1661)
+ 4620 × 1 resulting in 4620
+ 4620 × 60 what gives us 277200
+ 4620 × 600 which equals 2772000
+ 4620 × 1000 resulting in 4620000

= 7673820
