Available with Image Analyst license.
Available with Spatial Analyst license.
Overview
Divides the values of two rasters on a pixelbypixel basis.
Notes
The order of the inputs are important since the first input is divided by the second input.
When a number is divided by zero, the output result is NoData.
If both inputs are integers, an integer division is performed, and the output result is an integer. If either input is floating point, a floatingpoint division is performed, and the output result is a floatingpoint value.
Parameters
Parameter name  Description 

Raster  The input whose value will be divided by the second input. A number can be used as an input for this parameter, provided a raster is specified for Raster2. 
Raster2  The input whose value the first input will be divided by. A number can be used as an input for this parameter, provided a raster is specified for Raster. 
Extent Type  Choose which extent should be used in the output raster:

Cellsize Type  Choose which cell size to use in the output raster. If all the input cell sizes are the same, all the options will yield the same results.
