Final answer:
The provided expression involves applying rules for subtraction, division, and exponentiation to simplify it. The formatting issues in the original expression prevent a precise calculation; however, general advice on using exponent properties to add when multiplying and subtract when dividing has been given.
Step-by-step explanation:
The expression provided contains several operations including subtraction, division, and exponentiation, and it is required to be simplified.
To solve the expression (28.3-5.60)/(-2.3⁻²)/2³)⁴·²²⁸, we first need to compute the subtraction in the numerator, simplify the exponent in the denominator, and then apply the rules of exponents for division and multiplication to combine it all into a single value expressed in simplified form. Unfortunately, due to formatting issues in the original expression, it's ambiguous and cannot be precisely evaluated without clarification.
However, the process involves using the rules for arithmetic operations, particularly the properties of exponents, which state that when you multiply powers with the same base, you add the exponents, and when you divide, you subtract the exponents.