No problem, we've got 1842923 and 1688836 to multiply
1842923 × 1688836 = 1688836 × (1842923)
+ 1688836 × 3 what gives us 5066508
+ 1688836 × 20 what gives us 33776720
+ 1688836 × 900 what gives us 1519952400
+ 1688836 × 2000 which equals 3377672000
+ 1688836 × 40000 yielding 67553440000
+ 1688836 × 800000 which equals 1351068800000
+ 1688836 × 1000000 that is equal 1688836000000

= 3112394707628
