No problem, we've got 7907 and 1973 to multiply
7907 × 1973 = 1973 × (7907)
+ 1973 × 7 resulting in 13811
+ 1973 × 00 resulting in 0
+ 1973 × 900 that is equal 1775700
+ 1973 × 7000 that is equal 13811000

= 15600511
