No problem, we've got 9871 and 7200 to multiply
9871 × 7200 = 7200 × (9871)
+ 7200 × 1 that equals 7200
+ 7200 × 70 giving us 504000
+ 7200 × 800 that results in 5760000
+ 7200 × 9000 that equals 64800000

= 71071200
