Alright, let's work through 2134 times 1985 step by step
2134 × 1985 = 1985 × (2134)
+ 1985 × 4 what gives us 7940
+ 1985 × 30 that equals 59550
+ 1985 × 100 that results in 198500
+ 1985 × 2000 what gives us 3970000

= 4235990
