Alright, let's work through 6138 times 1975 step by step
6138 × 1975 = 1975 × (6138)
+ 1975 × 8 yielding 15800
+ 1975 × 30 giving us 59250
+ 1975 × 100 that is equal 197500
+ 1975 × 6000 that equals 11850000

= 12122550
