Final answer:
The question likely involves arithmetic and scientific notation with the potential need to enter such notation into a calculator. The student's expression contains errors, and the correct order of operations and notation usage is important.
Step-by-step explanation:
The simplified expression in question should take order of operations into account. However, the initial equation is unclear due to typos, but it involves basic arithmetic and potentially the correct usage of scientific notation. When dealing with scientific notation, it is important to recognize that numbers like 56900 can be expressed as 5.69 × 104. This notation is commonly used in subjects such as chemistry where large or small numbers are frequent.
Furthermore, the student may need to enter these numbers into a calculator, which requires understanding how to do so correctly depending on the calculator's model. The correct entry of scientific notation is crucial to avoid calculation errors. If there is any confusion, students are encouraged to consult their instructor. When simplifying expressions or solving equations, attention to detail in each step is key to arriving at the correct answer.