[Python] Function for rounding up

I am currently learning Python and is answering some online questions. the question is to write a Python function to round up a number to specified digits.

My answer is completely different from the solution provided. Can someone explain to me the difference? And which solutions if more efficient?

I am asking so i can improve how i write scripts

My Script:

import math

number = float(input("Provide a number: "))
factor = float(input("rounding factor: "))

def round_up(number, factor):
return math.ceil(number / factor) * factor

result = round_up(number, factor)
print(result)


Solution script:

import math

def roundup(a, digits=0):
n = 10**-digits
return round(math.ceil(a / n) * n, digits)

x = 123.01247
print("Original Number: ",x)
print(roundup(x, 0))
print(roundup(x, 1))
print(roundup(x, 2))
print(roundup(x, 3))

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