Solve the multiplication problems as shown in the image.

Solution:

The image shows multiplication problems. I will solve them step-by-step as they are presented.

1. Problem 1: Multiply 9 by 20.

\( 9 \times 20 = 180 \)

2. Problem 2: Multiply 3211 by 210.

\( 3211 \times 210 \)

	3	2	1	1
×		2	1	0
	0	0	0	0
	3	2	1	1
6	4	2	2
6	7	4	3	1	0

\( 3211 \times 210 = 674310 \)

3. Problem 3: Multiply 65 by an unknown number. The image is cut off, so this problem cannot be solved completely.

Answer: 180, 674310. The third problem is incomplete.