No problem, we've got 3688624 and 3672137 to multiply
3688624 × 3672137 = 3672137 × (3688624)
+ 3672137 × 4 yielding 14688548
+ 3672137 × 20 which equals 73442740
+ 3672137 × 600 producing 2203282200
+ 3672137 × 8000 what gives us 29377096000
+ 3672137 × 80000 that results in 293770960000
+ 3672137 × 600000 yielding 2203282200000
+ 3672137 × 3000000 resulting in 11016411000000

= 13545132669488
