Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Year | Foundry | Diameter (mm) | Weight (kg) | Nominal Tone |
| --- | --- | --- | --- | --- |
| 1956.0 | F. W. Schilling | 2023.0 | 4 935 | g° |
| 1956.0 | F. W. Schilling | 1671.0 | 2 772 | b° |
| 1956.0 | F. W. Schilling | 1477.0 | 1 921 | c′ |
| 1754.0 | J. M. Steiger | 1275.0 | 1 400 | es′ |
| 1956.0 | F. W. Schilling | 1094.0 | 857 | f′ |
| 1956.0 | F. W. Schilling | 1006.0 | 700 | g′ |
| 1975.0 | Heidelberger Glockengießerei | 892.0 | 511 | b′ |
| 1975.0 | Heidelberger Glockengießerei | 790.0 | 362 | c″ |
Question:
What is the sum total of all the years with a bell that weighed 857 kilograms?
Answer:
1956.0