1. The problem is to evaluate the expression $78:78:1x9:9x52:52x183:1-79$. 2. First, interpret the colons ":" as division and "x" as multiplication. So the expression becomes: $$\frac{78}{78} \div 1 \times 9 \div 9 \times 52 \div 52 \times 183 \div 1 - 79$$ 3. Simplify each fraction: $$\frac{78}{78} = 1, \quad \frac{9}{9} = 1, \quad \frac{52}{52} = 1, \quad \frac{183}{1} = 183$$ 4. Substitute back: $$1 \div 1 \times 1 \times 1 \times 183 - 79$$ 5. Division and multiplication are performed from left to right: $$1 \div 1 = 1$$ $$1 \times 1 = 1$$ $$1 \times 183 = 183$$ 6. Now subtract 79: $$183 - 79 = 104$$ 7. Final answer: $$104$$