Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is the total population with a population density less than 29,384.8 in San Nicolas?

### Inputs:
table_name: table, columns: ['District', 's Barangay', 'Population (2010 census)', 'Area ( has .)', 'Pop. density (per km2)']

### Response:
SELECT SUM Population (2010 census) FROM table WHERE Pop. density (per km2) < 29,384.8 AND District = san nicolas