No problem, we've got 396309 and 55906848 to multiply
396309 × 55906848 = 55906848 × (396309)
+ 55906848 × 9 giving us 503161632
+ 55906848 × 00 that equals 0
+ 55906848 × 300 what gives us 16772054400
+ 55906848 × 6000 that results in 335441088000
+ 55906848 × 90000 giving us 5031616320000
+ 55906848 × 300000 that equals 16772054400000

= 22156387024032
