(2) How does system stack work? (5%)

2. Figure 2 shows an image stored in a two-dimensional array img[row][column] using row-major order. The array starts at memory address 30000. The image has 300 rows and 400 columns, and each pixel uses 4 bytes of memory. What is the memory address of img[200][100]? Assume that memory addresses are written in decimal and array indices start from 0. (10%)