Alright, let's work through 1245 times 7798 step by step
1245 × 7798 = 7798 × (1245)
+ 7798 × 5 that equals 38990
+ 7798 × 40 producing 311920
+ 7798 × 200 which equals 1559600
+ 7798 × 1000 giving us 7798000

= 9708510
