Alright, let's work through 28921671 times 1300684 step by step
28921671 × 1300684 = 1300684 × (28921671)
+ 1300684 × 1 resulting in 1300684
+ 1300684 × 70 that is equal 91047880
+ 1300684 × 600 that equals 780410400
+ 1300684 × 1000 yielding 1300684000
+ 1300684 × 20000 which equals 26013680000
+ 1300684 × 900000 resulting in 1170615600000
+ 1300684 × 8000000 which equals 10405472000000
+ 1300684 × 20000000 giving us 26013680000000

= 37617954722964
