Vakra Tund Maha Kaay Surya Koti Samahprabah
Nirvighnam Kurumaydeva Sarvkarya Shu Sarvada
Sanskrit does not map into English. Nor the words or the sentence formation. It is always recommended to learn Sanskrit or at least Hindi to understand the mantras.
As is typical, the first line addresses the deity/devi/deva the mantra is addressed to. It usually takes form a praise describing some aspect of the deity that the mantra’s composition is based on. Here the focus is on Ganesha’s Maha Kaaya which denotes well-being, sufficiency, wealth, have more of and goodness in abundance.
Here is an attempt to translate it using words explained above:
Bent-trunk one, huge form one, one who shines like a million suns; remove obstacles my deva always in all tasks I do.