No problem, we've got 3643 and 7960 to multiply
3643 × 7960 = 7960 × (3643)
+ 7960 × 3 yielding 23880
+ 7960 × 40 giving us 318400
+ 7960 × 600 that equals 4776000
+ 7960 × 3000 yielding 23880000

= 28998280
