198698+(150036-74946) :30*400

To solve the expression \( 198698 + (150036 - 74946) \div 30 \times 400 \), we will follow the order of operations (parentheses, exponents, multiplication and division from left to right, addition and subtraction from left to right).

1. Calculate the expression inside the parentheses: \[ 150036 - 74946 = 75090 \]

2. Next, divide that result by 30: \[ 75090 \div 30 = 2503 \]

3. Now multiply that result by 400: \[ 2503 \times 400 = 1001200 \]

4. Finally, add that result to \( 198698 \): \[ 198698 + 1001200 = 1199898 \]

Therefore, the final result is: \[ \boxed{1199898} \]