345678+4-23

To solve the expression \( 345678 + 4 - 23 \):

1. First, add \( 345678 + 4 \): \[ 345678 + 4 = 345682 \]

2. Next, subtract \( 23 \) from \( 345682 \): \[ 345682 - 23 = 345659 \]

So, \( 345678 + 4 - 23 = 345659 \).