Constant solana_sdk::rent::DEFAULT_LAMPORTS_PER_BYTE_YEAR

pub const DEFAULT_LAMPORTS_PER_BYTE_YEAR: u64 = 1000000000 / 100 * 365 / (1024 * 1024); // 0x0_000_000_000_000_d98u64

default rental rate in lamports/byte-year, based on: 10^9 lamports per SOL $1 per SOL $0.01 per megabyte day $3.65 per megabyte year