Alright, let's work through 7645 times 9144 step by step
7645 × 9144 = 9144 × (7645)
+ 9144 × 5 yielding 45720
+ 9144 × 40 which equals 365760
+ 9144 × 600 giving us 5486400
+ 9144 × 7000 yielding 64008000

= 69905880
