https://mathweb.ru/allsystem.html?id=308985

Умножить 11101011.001100010010(2) на 10101(2) = 1001101001011.000001111010000000000000 Столбиком

Введите два числа и укажите их основание системы счиления:

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

Ответ: 11101011.001100010010₂ * 10101₂ = 1001101001011.000001111010000000000000₂