No problem, we've got 7998 and 4210 to multiply
7998 × 4210 = 4210 × (7998)
+ 4210 × 8 what gives us 33680
+ 4210 × 90 resulting in 378900
+ 4210 × 900 giving us 3789000
+ 4210 × 7000 which equals 29470000

= 33671580
