We're going to solve 7890 multiplied by 5591
7890 × 5591 = 5591 × (7890)
+ 5591 × 0 giving us 0
+ 5591 × 90 giving us 503190
+ 5591 × 800 giving us 4472800
+ 5591 × 7000 that is equal 39137000

= 44112990
