Rewrite the sentence to make the adverb clause the subject
The computer was upgraded, which was a big job.
That it was a big job to upgrade the computer was evident.
Complete the following task based on the instruction and optional input provided.### Instruction:
Rewrite the sentence to make the adverb clause the subject
The computer was upgraded, which was a big job.

### Output:
That it was a big job to upgrade the computer was evident.