Alright, let's work through 90244946 times 21690206 step by step
90244946 × 21690206 = 21690206 × (90244946)
+ 21690206 × 6 yielding 130141236
+ 21690206 × 40 yielding 867608240
+ 21690206 × 900 what gives us 19521185400
+ 21690206 × 4000 yielding 86760824000
+ 21690206 × 40000 which equals 867608240000
+ 21690206 × 200000 that equals 4338041200000
+ 21690206 × 0000000 that results in 0
+ 21690206 × 90000000 yielding 1952118540000000

= 1957431469198876
