No problem, we've got 9921 and 7341 to multiply
9921 × 7341 = 7341 × (9921)
+ 7341 × 1 what gives us 7341
+ 7341 × 20 yielding 146820
+ 7341 × 900 which equals 6606900
+ 7341 × 9000 what gives us 66069000

= 72830061
