Hand over fist

From Fresh Dictionary

English

Adverb

hand over fist

1. ((idiomatic{{#if:|, {{{2}}}{{#if:|, {{{3}}}{{#if:|, {{{4}}}{{#if:|, {{{5}}}{{#if:|, {{{6}}}{{#if:|, {{{7}}}{{#if:|, {{{8}}}{{#if:|, {{{9}}}}}}}}}}}}}}}}}}})) Quickly or in great quantity, especially in reference to earning money.

   He didn't earn much, but the company seemed to rake in money hand over fist.