Question 6
Fill all five blanks. Given 21 × 9 = 189, 321 × 9 = 2889, 4321 × 9 = 38889, find:
(a) 54321 × 9; (b) 654321 × 9; (c) 7654321 × 9; (d) 87654321 × 9; (e) 987654321 × 9.
Enter the five results in order, separated by commas, without spaces or digit-grouping separators.

(a) 54321 × 9; (b) 654321 × 9; (c) 7654321 × 9; (d) 87654321 × 9; (e) 987654321 × 9.
Enter the five results in order, separated by commas, without spaces or digit-grouping separators.
