Okay, let’s tackle this. So Bian has 12 years of marketing experience, which is a significant amount of time. Marketing professionals with similar experience in Indonesia can charge around IDR 1,000,000 - IDR 3,000,000 (USD 70-$200) per month. Considering his location in Samarinda, East Kalimantan, which is a relatively small city, his rate might be lower than in major cities like Jakarta. Let’s estimate his hourly rate based on his monthly salary. Assuming a 40-hour workweek and 4 weeks of work per month, his monthly salary would be around IDR 200,000,000 - IDR 600,000,000 (USD 14,000-$42,000). Dividing this by 160 hours (40 hours/week * 4 weeks), we get an hourly rate of around IDR 1,250 - IDR 3,750 (USD 85-$260). Converting this to USD, we get an estimated hourly rate of around $75. This is a rough estimate and may vary based on various factors such as industry demand, company size, and specific job requirements.