https://mathweb.ru/allsystem.html?id=124020

Умножить 0.111111110000000000(2) на 1010(2) = 1001.111101100000000000000000000000000000 Столбиком

Введите два числа и укажите их основание системы счиления:

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

Ответ: 0.111111110000000000₂ * 1010₂ = 1001.111101100000000000000000000000000000₂