Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
Elijah is painting his living room and decides to buy masking tape to make his painting neater. 2 of his walls are 4 meters wide and the other 2 walls are 6 meters wide. Elijah needs enough masking tape to cover the entire width of each wall and can order the exact amount of masking tape he needs. How many meters of masking tape does Elijah need to order?

### Response:
4 x 2 = <<4*2=8>>8 meters of masking tape are needed for the 4-meter walls.
6 x 2 = <<6*2=12>>12 meters of masking tape are needed for the 6-meter walls.
Therefore, Elijah needs to order 8 + 12 = <<8+12=20>>20 meters of masking tape.
#### 20

