Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
Suzanna's history textbook has 160 pages and her geography textbook has 70 more pages. Her math textbook has half of the sum of the first two books' pages, and her science textbook has twice the number of pages of her history textbook. If Suzanna stacks all her textbooks on her desk, how many pages would there be in total?

### Response:
 Kitabu chake cha jiografia kina kurasa 160 + 70 = <<160+70=230>>230
Jumla ya kurasa za kitabu chake cha historia na jiografia ni 160 + 230 = <<160+230=390>>390 kurasa
Kitabu chake cha hesabu kina kurasa 390/2 = <<390/2=195>>195
Kitabu chake cha sayansi kina kurasa 160 x 2 = <<160*2=320>>320
Jumla ya kurasa za vitabu vyake vyote ni 160 + 230 + 195 + 320 = <<160+230+195+320=905>>905 kurasa