78988-36377+668847

To solve the expression \( 78988 - 36377 + 668847 \), follow the order of operations:

1. Calculate \( 78988 - 36377 \): \[ 78988 - 36377 = 42611 \]

2. Now add \( 668847 \) to the result: \[ 42611 + 668847 = 711458 \]

Therefore, \( 78988 - 36377 + 668847 = 711458 \).