make_num_pretty(12356789)
#> [1] "12,356,789"
make_num_pretty(12356789,5)
#> [1] "12,356,789"
make_num_pretty(0.12356789)
#> [1] "0.124"
make_num_pretty(0.12356789,5)
#> [1] "0.12357"
make_num_pretty(8.1e-09)
#> [1] "0"
make_num_pretty(8.1e-09,10)
#> [1] "0.0000000081"