No problem, we've got 80223905 and 68671458 to multiply
80223905 × 68671458 = 68671458 × (80223905)
+ 68671458 × 5 yielding 343357290
+ 68671458 × 00 that equals 0
+ 68671458 × 900 giving us 61804312200
+ 68671458 × 3000 which equals 206014374000
+ 68671458 × 20000 producing 1373429160000
+ 68671458 × 200000 what gives us 13734291600000
+ 68671458 × 0000000 that results in 0
+ 68671458 × 80000000 that results in 5493716640000000

= 5509092522803490
