60000-X=263*3
60000-X=789
X=60000-789 X=59211 60000-59211=263*3 _ 789=789
60000-x=789
X=60000-789
X=59211
60000-X=263*3
60000-X=789
X=60000-789 X=59211 60000-59211=263*3 _ 789=789
60000-x=789
X=60000-789
X=59211