How would you find the answer to this?

Assume that two two-by-two source rasters contain the following values:

Raster 1:

7 14
10 36

Raster 2:

5 2
2 5

What would be the sum of all pixel values in the raster that would be created using the following map algebra expression?

Expression: [Raster 1] * [Raster 2]