Alright, let's work through 1704 times 9141 step by step
1704 × 9141 = 9141 × (1704)
+ 9141 × 4 which equals 36564
+ 9141 × 00 yielding 0
+ 9141 × 700 what gives us 6398700
+ 9141 × 1000 producing 9141000

= 15576264
