Alright, let's work through 7285 times 1787 step by step
7285 × 1787 = 1787 × (7285)
+ 1787 × 5 giving us 8935
+ 1787 × 80 that is equal 142960
+ 1787 × 200 that equals 357400
+ 1787 × 7000 which equals 12509000

= 13018295
