Alright, let's work through 5815 times 1789 step by step
5815 × 1789 = 1789 × (5815)
+ 1789 × 5 that results in 8945
+ 1789 × 10 giving us 17890
+ 1789 × 800 resulting in 1431200
+ 1789 × 5000 that is equal 8945000

= 10403035
