!9 + !8=? Dengan langkah

• 9!

• (9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1)

• (72 × 7 × 6 × 5 × 4 × 3 × 2 × 1)

• (504 × 6 × 5 × 4 × 3 × 2 × 1)

• (3.024 × 5 × 4 × 3 × 2 × 1)

• (15.120 × 4 × 3 × 2 × 1)

• (60.480 × 3 × 2 × 1)

• (181.440 × 2 × 1)

• (362.880 × 1)

• 362.880

• 8!

• (8 × 7 × 6 × 5 × 4 × 3 × 2 × 1)

• (56 × 6 × 5 × 4 × 3 × 2 × 1)

• (336 × 5 × 4 × 3 × 2 × 1)

• (1.680 × 4 × 3 × 2 × 1)

• (6.720 × 3 × 2 × 1)

• (20.160 × 2 × 1)

• (40.320 × 1)

• 40.320

• 9! + 8!

• 362.880 + 40.320

• 403.200