As character names:

U+211D DOUBLE-STRUCK CAPITAL R character (ℝ)

As raw characters:

ℝ

As a string of HTML entities:

ℝ

Decoder output:

Byte number 1 is decimal 226, hex 0xE2, octal \342, binary 11100010
This is the first byte of a 3 byte sequence.

Byte number 2 is decimal 132, hex 0x84, octal \204, binary 10000100
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 157, hex 0x9D, octal \235, binary 10011101
This is continuation byte 2, expecting 0 more.

U+211D	DOUBLE-STRUCK CAPITAL R
	= the set of real numbers
	# <font> 0052 latin capital letter r