442 - 3 × [ ( 125 + 125 : 5 ) - ( 219 - 72 × 3 ) ] = 1
= 442 - 3 × [ ( 125 + 25 ) - ( 219 - 216 ) ] =
= 442 - 3 × ( 150 - 3 ) =
= 442 - 3 × 147 =
= 442 - 441 =
= 1
