"Tumeshinda kwa goli moja"

Translation: We have won by one goal

[Branjabs]

I can't believe that "We have won by a goal" was not accepted. A goal and one goal should be interchangeable

[vitoreiji]

Sometimes there is a kwa and sometimes there isn't. Is there a rule behind this? What is it?

[MfonUdoiny]

Hongera!

[amire80]

Is "we won" and "we have won" different in Swahili?