2-1+629•478

To solve the expression \(2 - 1 + 629 \times 478\):

1. First, calculate \(629 \times 478\): \[ 629 \times 478 = 300,862 \]

2. Now substitute back into the expression: \[ 2 - 1 + 300,862 \]

3. Next, simplify \(2 - 1\): \[ 2 - 1 = 1 \]

4. Finally, add \(1 + 300,862\): \[ 1 + 300,862 = 300,863 \]

So, the final result is: \[ \boxed{300863} \]