When the target number is rounded to the nearest million, the millions digit is 1.

When the target number is rounded to the nearest hundred-thousand, the hundred-thousands digit is 8.

When the target number is rounded to the nearest ten-thousand, the ten-thousands digit is 5.

When the target number is rounded to the nearest thousand, the thousands digit is 4.

When the target number is rounded to the nearest hundred, the hundreds digit is 4.

When the target number is rounded to the nearest fifty, the tens digit is 5.