Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 3ca9809044cbe063017f6fb9a8ea963066f6b1926aef24fdaa2d024efb7d5545:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^