No problem, we've got 7637 and 1820 to multiply
7637 × 1820 = 1820 × (7637)
+ 1820 × 7 which equals 12740
+ 1820 × 30 yielding 54600
+ 1820 × 600 what gives us 1092000
+ 1820 × 7000 that equals 12740000

= 13899340
