Найти среднее всех целых четных чисел для каждой строки в файле input.txt. Результаты вывести на экран и в файл output.txt

-7.31;	68.0;	-73.3;	92.0;	78.1;	-71.0;	31.0;	-61.0;	69.0;	67.1;	-24.0;	-80.9;	89.6;	61.0;	-70.5;	69.8;	-66.0;	-65.0;	17.9;	-78.1
-29.4;	-48.9;	12.0;	-94.0;	-26.0;	-46.9;	-62.7;	77.6;	-4.0;	6.82;	70.2;	87.7;	-27.4;	97.8;	84.0;	47.1;	15.0;	80.0;	13.1;	-92.0
-30.4;	-67.6;	-20.3;	-2.71;	-97.7;	99.0;	-27.3;	-72.0;	37.2;	64.0;	42.0;	36.9;	-79.0;	99.0;	-30.6;	-72.0;	-23.0;	10.2;	8.64;	23.9
-62.3;	-42.1;	43.0;	58.0;	-67.9;	-71.0;	93.1;	61.7;	-60.0;	-90.4;	-68.0;	15.0;	-84.3;	59.9;	27.1;	37.7;	-86.0;	87.0;	30.9;	43.7
-91.5;	58.8;	-37.6;	-56.0;	-80.8;	50.3;	99.4;	-97.8;	-24.0;	50.0;	-60.0;	-81.3;	-48.0;	69.0;	-58.1;	-27.0;	24.1;	-74.9;	37.0;	50.5
86.0;	91.4;	-54.2;	53.0;	79.0;	-67.5;	31.0;	-39.9;	61.0;	0.463;	-77.0;	34.0;	18.6;	-5.63;	46.2;	72.6;	-29.2;	15.0;	-44.0;	-92.0
-32.2;	91.0;	71.5;	27.0;	61.0;	15.0;	-46.0;	51.0;	-78.6;	36.3;	90.0;	-64.7;	90.0;	-89.2;	-53.9;	17.2;	-81.8;	2.0;	78.4;	71.9
78.0;	13.0;	-4.62;	-22.0;	74.5;	28.4;	60.0;	5.0;	2.83;	-86.2;	-71.0;	-91.2;	93.5;	-77.0;	-52.0;	53.0;	-80.5;	-98.9;	93.3;	83.0
47.0;	43.8;	-12.0;	-17.0;	32.6;	-31.6;	69.0;	-32.9;	-94.9;	-50.0;	-92.9;	93.0;	10.2;	-32.0;	33.0;	26.5;	-24.0;	75.7;	92.3;	88.4
-61.0;	-70.9;	-97.0;	-85.0;	62.1;	77.2;	-98.0;	-88.8;	49.0;	-53.1;	53.0;	60.3;	82.3;	34.0;	50.5;	2.0;	-37.0;	-17.0;	-28.0;	-78.0