No problem, we've got 16620221 and 5496036 to multiply
16620221 × 5496036 = 5496036 × (16620221)
+ 5496036 × 1 what gives us 5496036
+ 5496036 × 20 which equals 109920720
+ 5496036 × 200 resulting in 1099207200
+ 5496036 × 0000 producing 0
+ 5496036 × 20000 that equals 109920720000
+ 5496036 × 600000 resulting in 3297621600000
+ 5496036 × 6000000 what gives us 32976216000000
+ 5496036 × 10000000 that results in 54960360000000

= 91345332943956
