For me, "and" is correct. "As nearly as I can figure out" means "as far as I can tell". It is a way of saying "in my analysis" or "as I understand it".
Student or Learner
A farmer became tired of his farm; and no wonder, you’ll say, for he was born on the place. He had spent all his days on it. He was sick and tired of the surroundings. He wanted a change; and often in his dreams, he pictured a quiet spot where conditions were ideal, and where he could spend his old age in comfort and be happy. He told the real estate agent in town how he felt, so the agent drove out and looked the farm over carefully. He felt sure he would have no difficulty in finding a buyer. When the weekly paper came out, the old farmer looked over the advertisements, and found his farm listed. It stated that the Hammond place of 160 acres was for sale. The land was fertile and productive — a crop failure had never been known. 40 acres were covered with a lot of trees and the farm had a good supply of water all the year round. There was rich agricultural land, through which flowed a small stream and there was a large and modern house of eight rooms. The farm had a great many horses, cows, sheep, and chickens. It was close to the town — only a half hour’s drive, and had a telephone. There were all kinds of fruit trees, both large and small, with an abundance of shelter around the house. The old man read the advertisement a second time, and then drove to town to see the real estate agent. “I have read that advertisement,” he said, “______ as nearly as I can figure out, that’s exactly the kind of place I have been wanting. I think I will keep it myself.”
1. I filled ‘but’ in the blank, but the answer is ‘and’. I wonder why.
2. Does ‘as nearly as I can figure out’ mean ‘finally I figure out’?
Do 'as far as I can tell' and 'as far as I can see' have the same meaning?