4. 6) (9·0,08+0,7-0,08)·(9·12,5-0,7-12 1/2)+9,49

1. Calculate the first parenthesis: (9 * 0.08 + 0.7 - 0.08) = (0.72 + 0.7 - 0.08) = 1.34.
2. Calculate the second parenthesis: (9 * 12.5 - 0.7 - 12.5) = (112.5 - 0.7 - 12.5) = 99.3.
3. Multiply the results and add 9.49: (1.34 * 99.3) + 9.49 = 133.062 + 9.49 = 142.552.