No problem, we've got 20823234 and 13848679 to multiply
20823234 × 13848679 = 13848679 × (20823234)
+ 13848679 × 4 producing 55394716
+ 13848679 × 30 resulting in 415460370
+ 13848679 × 200 which equals 2769735800
+ 13848679 × 3000 producing 41546037000
+ 13848679 × 20000 resulting in 276973580000
+ 13848679 × 800000 that results in 11078943200000
+ 13848679 × 0000000 resulting in 0
+ 13848679 × 20000000 what gives us 276973580000000

= 288374283407886
