No problem, we've got 4020 and 7716 to multiply
4020 × 7716 = 7716 × (4020)
+ 7716 × 0 which equals 0
+ 7716 × 20 that is equal 154320
+ 7716 × 000 that equals 0
+ 7716 × 4000 that results in 30864000

= 31018320
