Alright, let's work through 4245 times 4030 step by step
4245 × 4030 = 4030 × (4245)
+ 4030 × 5 what gives us 20150
+ 4030 × 40 producing 161200
+ 4030 × 200 producing 806000
+ 4030 × 4000 that results in 16120000

= 17107350
