https://mathweb.ru/umnojenie-stolbikom.html?id=13948

Умножить 0.142857142857142857 на 7 = 0.999999999999999999000000000000000000 Столбиком

Введите два числа: первый множитель и второй множитель.

умножить на

Решение:

x																					0	.	1	4	2	8	5	7	1	4	2	8	5	7	1	4	2	8	5	7
x																					7	.	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
+																						0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
																					0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
																				0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
																			0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
																		0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
																	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
																0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
															0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
														0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
													0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
												0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
											0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
										0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
									0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
								0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
							0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
						0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
					0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

				0	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9
				0.	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	9	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

Ответ: 0.142857142857142857×7 = 0.999999999999999999000000000000000000