Alright, let's work through 91270979 times 92101998 step by step
91270979 × 92101998 = 92101998 × (91270979)
+ 92101998 × 9 resulting in 828917982
+ 92101998 × 70 which equals 6447139860
+ 92101998 × 900 what gives us 82891798200
+ 92101998 × 0000 that equals 0
+ 92101998 × 70000 resulting in 6447139860000
+ 92101998 × 200000 that equals 18420399600000
+ 92101998 × 1000000 which equals 92101998000000
+ 92101998 × 90000000 what gives us 8289179820000000

= 8406239525316042
