1-361:(324*73)

Interpreting ":" as division (standard precedence), the expression is: 1 - 361 ÷ (324 × 73)

• 324 × 73 = 23652
• 361/23652 is irreducible
• Result = 1 - 361/23652 = (23652 - 361)/23652 = 23291/23652 ≈ 0.9847

If you instead meant (1 - 361) ÷ (324 × 73), the result would be -360/23652 = -10/657 ≈ -0.01522.

Which interpretation did you intend?