Let's simplify the equation:

(y-19975) / 75 = 164041 - 2603*58

(y-19975) / 75 = 164041 - 150734

(y-19975) / 75 = 13307

Multiplying both sides by 75:

y - 19975 = 75 * 13307

y - 19975 = 997802

Adding 19975 to both sides:

y = 997802 + 19975

y = 1019777

So, the value of y is 1019777.