14056-(42103+14):3+(18710-18708)*45

First, let's simplify the expression step by step:

Step 1: Calculate the sum inside the parentheses: 42103 + 14 = 42117

Step 2: Subtract the sum from the original number: 14056 - 42117 = -28061

Step 3: Divide the result by 3: -28061 / 3 = -9353.6667 (rounded to 4 decimal places)

Step 4: Find the difference inside the parentheses: 18710 - 18708 = 2

Step 5: Multiply the difference by 45: 2 * 45 = 90

Step 6: Add the results from step 3 and step 5: -9353.6667 + 90 = -9263.6667 (rounded to 4 decimal places)

So, the simplified expression is -9263.6667.