A total of 152,909 people visited a national park during one weekend. What is this number rounded to the nearest hundred thousand

If you count from the 1 to the 2 like this ones, tens, hundreds, then you underline the 5 and if the number that you underlined is higher than 5 or it is 5 than you have you change the first number or the number next to the underlined one than you turn all the other numbers to 0's. And the answer is 200,000.