现有工程废料需要清理出去，第一次运走总量的12012，第二次运走余下废料的22012-1，第三次运走了余下的32
| 1 |
| 2012 |
| 1 |
| 2012 |
| 2 |
| 2012-1 |
| 1 |
| 2012 |
| 1 |
| 2012 |
| 2 |
| 2012-1 |
| 3 |
| 2012-3 |
=
| 1 |
| 2012 |
| 2 |
| 2012 |
| 3 |
| 2012 |
| 50 |
| 2012 |
=
| (1+50)×50÷2 |
| 2012 |
=
| 1275 |
| 2012 |
1-
| 1275 |
| 2012 |
| 737 |
| 2012 |
答：余下废料是总量的
| 737 |
| 2012 |
故答案为：
| 737 |
| 2012 |
| 1 |
| 2012 |
| 1 |
| 2012 |
| 2 |
| 2012-1 |
| 1 |
| 2012 |
| 1 |
| 2012 |
| 2 |
| 2012-1 |
| 3 |
| 2012-3 |
=
| 1 |
| 2012 |
| 2 |
| 2012 |
| 3 |
| 2012 |
| 50 |
| 2012 |
=
| (1+50)×50÷2 |
| 2012 |
=
| 1275 |
| 2012 |
1-
| 1275 |
| 2012 |
| 737 |
| 2012 |
答：余下废料是总量的
| 737 |
| 2012 |
故答案为：
| 737 |
| 2012 |