https://mathweb.ru/allsystem.html?id=298427

Умножить 101010.100101000111(2) на 1011110.001000010100(2) = 111110101000.000010001110011110001100 Столбиком

Введите два числа и укажите их основание системы счиления:

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

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

Ответ: 101010.100101000111₂ * 1011110.001000010100₂ = 111110101000.000010001110011110001100₂