225ug/L*.86ug/m3*13.1m3/day*1033ug/m3*10years/52kg

To simplify this calculation, let's break it down into steps:

Step 1: Multiply the values without units:
225 * 0.86 * 13.1 * 1033 * 10 / 52

Step 2: Cancel out units using the conversion factors:
(225 ug/L) * (0.86 ug/m3) * (13.1 m3/day) * (1033 ug/m3) * (10 years) / (52 kg)

Step 3: Convert the units to cancel out and calculate the final result:
- Convert liters to cubic meters: 1 L = 0.001 m3
- Convert grams to kilograms: 1 g = 0.001 kg

(225 * 0.86 * 13.1 * 1033 * 10 / 52) * (0.001 ug/m3) * (0.001 m3/L) * (0.001 kg/g)

Step 4: Calculate the final result:
(225 * 0.86 * 13.1 * 1033 * 10 / 52) * (0.001 * 0.001 * 0.001)

Now you can multiply the values, and divide where necessary, to get the final answer:

(225 * 0.86 * 13.1 * 1033 * 10 / 52) * (0.001 * 0.001 * 0.001) = 20.81868584

Therefore, the result of the calculation is approximately 20.8187.