Alright, let's work through 1172 times 2109 step by step
1172 × 2109 = 2109 × (1172)
+ 2109 × 2 what gives us 4218
+ 2109 × 70 that is equal 147630
+ 2109 × 100 which equals 210900
+ 2109 × 1000 giving us 2109000

= 2471748
