Alright, let's work through 1811 times 688 step by step
1811 × 688 = 688 × (1811)
+ 688 × 1 yielding 688
+ 688 × 10 giving us 6880
+ 688 × 800 giving us 550400
+ 688 × 1000 which equals 688000

= 1245968
