Alright, let's work through 2312 times 2139 step by step
2312 × 2139 = 2139 × (2312)
+ 2139 × 2 yielding 4278
+ 2139 × 10 that is equal 21390
+ 2139 × 300 yielding 641700
+ 2139 × 2000 what gives us 4278000

= 4945368
