1. **State the problem:** Calculate the value of the expression $$(1239+601)(1521-1481)$$. 2. **Apply the order of operations:** First, solve the expressions inside the parentheses. 3. Calculate the sum inside the first parentheses: $$1239 + 601 = 1840$$ 4. Calculate the difference inside the second parentheses: $$1521 - 1481 = 40$$ 5. Multiply the results from steps 3 and 4: $$1840 \times 40 = 73600$$ 6. **Final answer:** $$73600$$