https://mathweb.ru/allsystem.html?id=327021

Умножить 11100111.1000011011(2) на 101.001(2) = 10010100010.10010010100110000000 Столбиком

Введите два числа и укажите их основание системы счиления:

x															1	1	1	0	0	1	1	1	.	1	0	0	0	0	1	1	0	1	1
x																				1	0	1	.	0	0	1	0	0	0	0	0	0	0
+																0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
															0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
														0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
													0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
												0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
											0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
										0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
									1	1	1	0	0	1	1	1	1	0	0	0	0	1	1	0	1	1
								0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
							0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

						1	1	1	0	0	1	1	1	1	0	0	0	0	1	1	0	1	1
					0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
				1	1	1	0	0	1	1	1	1	0	0	0	0	1	1	0	1	1
			1	0	0	1	0	1	0	0	0	1	0.	1	0	0	1	0	0	1	0	1	0	0	1	1	0	0	0	0	0	0	0

Ответ: 11100111.1000011011₂ * 101.001₂ = 10010100010.10010010100110000000₂