No problem, we've got 1207 and 4007 to multiply
1207 × 4007 = 4007 × (1207)
+ 4007 × 7 which equals 28049
+ 4007 × 00 giving us 0
+ 4007 × 200 that equals 801400
+ 4007 × 1000 that equals 4007000

= 4836449
