НОД (11,12) нок (42,70)

Простите, НОД(11,12)-найти не могу.

НОК(42;70)=14 т.к.

42  :   2=                                           70    :    7=

21  :   3=                                            10    :   2=

7   :   7 =                                              5   :    5=

1                                                       1

7*2=14

14*5=70             14*3=42